diff --git a/app/models/customer.rb b/app/models/customer.rb
index 3711d160243..539b568d987 100644
--- a/app/models/customer.rb
+++ b/app/models/customer.rb
@@ -72,8 +72,6 @@ class Customer < ApplicationRecord
   scope :falling_back_to_default_dunning_campaign, -> {
     where(applied_dunning_campaign_id: nil, exclude_from_dunning_campaign: false)
   }
-  scope :with_dunning_campaign_completed, -> { where(dunning_campaign_completed: true) }
-  scope :with_dunning_campaign_not_completed, -> { where(dunning_campaign_completed: false) }
 
   validates :country, :shipping_country, country_code: true, allow_nil: true
   validates :document_locale, language_code: true, unless: -> { document_locale.nil? }
@@ -192,7 +190,6 @@ def overdue_balance_cents
 
   def reset_dunning_campaign!
     update!(
-      dunning_campaign_completed: false,
       last_dunning_campaign_attempt: 0,
       last_dunning_campaign_attempt_at: nil
     )
@@ -222,7 +219,6 @@ def ensure_slug
 #  customer_type                    :enum
 #  deleted_at                       :datetime
 #  document_locale                  :string
-#  dunning_campaign_completed       :boolean          default(FALSE)
 #  email                            :string
 #  exclude_from_dunning_campaign    :boolean          default(FALSE), not null
 #  finalize_zero_amount_invoice     :integer          default("inherit"), not null
diff --git a/app/models/dunning_campaign.rb b/app/models/dunning_campaign.rb
index 73207e04302..e966b1c4dac 100644
--- a/app/models/dunning_campaign.rb
+++ b/app/models/dunning_campaign.rb
@@ -36,7 +36,7 @@ def self.ransackable_attributes(_auth_object = nil)
 
   def reset_customers_last_attempt
     # NOTE: Reset last attempt on customers with the campaign applied explicitly
-    customers.with_dunning_campaign_not_completed.update_all( # rubocop:disable Rails/SkipsModelValidations
+    customers.update_all( # rubocop:disable Rails/SkipsModelValidations
       last_dunning_campaign_attempt: 0,
       last_dunning_campaign_attempt_at: nil
     )
diff --git a/app/models/organization.rb b/app/models/organization.rb
index f22bed69713..5435a352bc2 100644
--- a/app/models/organization.rb
+++ b/app/models/organization.rb
@@ -138,7 +138,6 @@ def auto_dunning_enabled?
   def reset_customers_last_dunning_campaign_attempt
     customers
       .falling_back_to_default_dunning_campaign
-      .with_dunning_campaign_not_completed
       .update_all( # rubocop:disable Rails/SkipsModelValidations
         last_dunning_campaign_attempt: 0,
         last_dunning_campaign_attempt_at: nil
diff --git a/app/services/dunning_campaigns/bulk_process_service.rb b/app/services/dunning_campaigns/bulk_process_service.rb
index 447dab754f2..b00896e6420 100644
--- a/app/services/dunning_campaigns/bulk_process_service.rb
+++ b/app/services/dunning_campaigns/bulk_process_service.rb
@@ -16,7 +16,6 @@ def call
 
     def eligible_customers
       Customer
-        .with_dunning_campaign_not_completed
         .joins(:organization)
         .where(exclude_from_dunning_campaign: false)
         .where("organizations.premium_integrations @> ARRAY[?]::varchar[]", ['auto_dunning'])
@@ -31,7 +30,6 @@ def initialize(customer)
       end
 
       def call
-        return result if customer.dunning_campaign_completed?
         return result unless threshold
         return result if max_attempts_reached?
         return result unless days_between_attempts_satisfied?
diff --git a/app/services/dunning_campaigns/process_attempt_service.rb b/app/services/dunning_campaigns/process_attempt_service.rb
index 2408fa0a901..c274c018e4e 100644
--- a/app/services/dunning_campaigns/process_attempt_service.rb
+++ b/app/services/dunning_campaigns/process_attempt_service.rb
@@ -16,7 +16,7 @@ def call
       return result unless applicable_dunning_campaign?
       return result unless dunning_campaign_threshold_reached?
       return result unless days_between_attempts_passed?
-      return result if customer.dunning_campaign_completed?
+      return result if max_attempts_reached?
 
       ActiveRecord::Base.transaction do
         payment_request_result = PaymentRequests::CreateService.call(
@@ -30,7 +30,6 @@ def call
 
         customer.increment(:last_dunning_campaign_attempt)
         customer.last_dunning_campaign_attempt_at = Time.zone.now
-        customer.dunning_campaign_completed = last_dunning_campaign_attempt?
         customer.save!
 
         result.customer = customer
@@ -65,7 +64,7 @@ def days_between_attempts_passed?
       (customer.last_dunning_campaign_attempt_at + dunning_campaign.days_between_attempts.days).past?
     end
 
-    def last_dunning_campaign_attempt?
+    def max_attempts_reached?
       customer.last_dunning_campaign_attempt >= dunning_campaign.max_attempts
     end
 
diff --git a/app/services/dunning_campaigns/update_service.rb b/app/services/dunning_campaigns/update_service.rb
index dfb39d7ac15..c8fed6d73b8 100644
--- a/app/services/dunning_campaigns/update_service.rb
+++ b/app/services/dunning_campaigns/update_service.rb
@@ -18,7 +18,6 @@ def call
         dunning_campaign.assign_attributes(permitted_attributes)
         handle_thresholds if params.key?(:thresholds)
         handle_applied_to_organization_update if params.key?(:applied_to_organization)
-        handle_max_attempts_change if dunning_campaign.max_attempts_changed?
 
         dunning_campaign.save!
       end
@@ -84,9 +83,7 @@ def reset_customers_if_no_threshold_match
     end
 
     def customers_to_reset
-      @customers_to_reset ||= customers_applied_campaign
-        .or(customers_fallback_campaign)
-        .with_dunning_campaign_not_completed
+      @customers_to_reset ||= customers_applied_campaign.or(customers_fallback_campaign)
     end
 
     def customers_applied_campaign
@@ -110,17 +107,9 @@ def handle_applied_to_organization_update
       organization.reset_customers_last_dunning_campaign_attempt
 
       customers_fallback_campaign.update_all( # rubocop:disable Rails/SkipsModelValidations
-        dunning_campaign_completed: false,
         last_dunning_campaign_attempt_at: nil,
         last_dunning_campaign_attempt: 0
       )
     end
-
-    def handle_max_attempts_change
-      # we assume there is matching threshold at this point or it was reseted
-      customers_to_reset
-        .where("last_dunning_campaign_attempt >= ?", dunning_campaign.max_attempts)
-        .update_all(dunning_campaign_completed: true) # rubocop:disable Rails/SkipsModelValidations
-    end
   end
 end
diff --git a/app/services/payment_requests/payments/stripe_service.rb b/app/services/payment_requests/payments/stripe_service.rb
index dcf6e0172fa..b3d7a6a201f 100644
--- a/app/services/payment_requests/payments/stripe_service.rb
+++ b/app/services/payment_requests/payments/stripe_service.rb
@@ -344,11 +344,7 @@ def reset_customer_dunning_campaign_status(payment_status)
         return unless payment_status_succeeded?(payment_status)
         return unless payable.try(:dunning_campaign)
 
-        customer.update!(
-          dunning_campaign_completed: false,
-          last_dunning_campaign_attempt: 0,
-          last_dunning_campaign_attempt_at: nil
-        )
+        customer.reset_dunning_campaign!
       end
     end
   end
diff --git a/db/migrate/20241128091634_remove_dunning_campaign_completed_from_customers.rb b/db/migrate/20241128091634_remove_dunning_campaign_completed_from_customers.rb
new file mode 100644
index 00000000000..e1b940939d6
--- /dev/null
+++ b/db/migrate/20241128091634_remove_dunning_campaign_completed_from_customers.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class RemoveDunningCampaignCompletedFromCustomers < ActiveRecord::Migration[7.1]
+  def change
+    safety_assured do
+      remove_column :customers, :dunning_campaign_completed, :boolean, default: false
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 436d3f4dc70..3bc16d8a6b1 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2024_11_26_141853) do
+ActiveRecord::Schema[7.1].define(version: 2024_11_28_091634) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
   enable_extension "plpgsql"
@@ -469,7 +469,6 @@
     t.boolean "exclude_from_dunning_campaign", default: false, null: false
     t.integer "last_dunning_campaign_attempt", default: 0, null: false
     t.datetime "last_dunning_campaign_attempt_at", precision: nil
-    t.boolean "dunning_campaign_completed", default: false
     t.index ["applied_dunning_campaign_id"], name: "index_customers_on_applied_dunning_campaign_id"
     t.index ["deleted_at"], name: "index_customers_on_deleted_at"
     t.index ["external_id", "organization_id"], name: "index_customers_on_external_id_and_organization_id", unique: true, where: "(deleted_at IS NULL)"
diff --git a/spec/models/customer_spec.rb b/spec/models/customer_spec.rb
index 00a92c01183..dd4234c9764 100644
--- a/spec/models/customer_spec.rb
+++ b/spec/models/customer_spec.rb
@@ -599,7 +599,6 @@
     let(:customer) do
       create(
         :customer,
-        dunning_campaign_completed: true,
         last_dunning_campaign_attempt: 5,
         last_dunning_campaign_attempt_at: 1.day.ago
       )
@@ -607,8 +606,7 @@
 
     it "changes dunning campaign status counters" do
       expect { customer.reset_dunning_campaign! && customer.reload }
-        .to change(customer, :dunning_campaign_completed).to(false)
-        .and change(customer, :last_dunning_campaign_attempt).to(0)
+        .to change(customer, :last_dunning_campaign_attempt).to(0)
         .and change(customer, :last_dunning_campaign_attempt_at).to(nil)
     end
   end
diff --git a/spec/models/dunning_campaign_spec.rb b/spec/models/dunning_campaign_spec.rb
index 32fc665b2b1..fd08562827e 100644
--- a/spec/models/dunning_campaign_spec.rb
+++ b/spec/models/dunning_campaign_spec.rb
@@ -65,19 +65,6 @@
         .and change { customer.last_dunning_campaign_attempt_at }.from(last_dunning_campaign_attempt_at).to(nil)
     end
 
-    it "does not reset last attempt on customers with dunning campaign already completed" do
-      customer = create(
-        :customer,
-        organization:,
-        applied_dunning_campaign: dunning_campaign,
-        last_dunning_campaign_attempt: 1,
-        dunning_campaign_completed: true
-      )
-
-      expect { dunning_campaign.reset_customers_last_attempt }
-        .not_to change { customer.reload.last_dunning_campaign_attempt }.from(1)
-    end
-
     context "when applied to organization" do
       subject(:dunning_campaign) { create(:dunning_campaign, applied_to_organization: true) }
 
@@ -93,18 +80,6 @@
           .to change { customer.reload.last_dunning_campaign_attempt }.from(2).to(0)
           .and change { customer.last_dunning_campaign_attempt_at }.from(last_dunning_campaign_attempt_at).to(nil)
       end
-
-      it "does not reset last attempt on customers with dunning campaign already completed" do
-        customer = create(
-          :customer,
-          organization:,
-          last_dunning_campaign_attempt: 2,
-          dunning_campaign_completed: true
-        )
-
-        expect { dunning_campaign.reset_customers_last_attempt }
-          .not_to change { customer.reload.last_dunning_campaign_attempt }.from(2)
-      end
     end
   end
 end
diff --git a/spec/models/organization_spec.rb b/spec/models/organization_spec.rb
index f49e3b2ec7f..e253432d159 100644
--- a/spec/models/organization_spec.rb
+++ b/spec/models/organization_spec.rb
@@ -245,13 +245,11 @@
     it "resets the last dunning campaign attempt for customers" do
       customer1 = create(:customer, organization:, last_dunning_campaign_attempt: 1, last_dunning_campaign_attempt_at:)
       customer2 = create(:customer, organization:, last_dunning_campaign_attempt: 1, last_dunning_campaign_attempt_at:, applied_dunning_campaign: campaign)
-      customer3 = create(:customer, organization:, last_dunning_campaign_attempt: 1, last_dunning_campaign_attempt_at:, dunning_campaign_completed: true)
 
       expect { organization.reset_customers_last_dunning_campaign_attempt }
         .to change { customer1.reload.last_dunning_campaign_attempt }.from(1).to(0)
         .and change(customer1, :last_dunning_campaign_attempt_at).from(last_dunning_campaign_attempt_at).to(nil)
       expect(customer2.reload.last_dunning_campaign_attempt).to eq(1)
-      expect(customer3.reload.last_dunning_campaign_attempt).to eq(1)
     end
   end
 
diff --git a/spec/services/customers/update_service_spec.rb b/spec/services/customers/update_service_spec.rb
index daddd26177c..ebc7f0f196c 100644
--- a/spec/services/customers/update_service_spec.rb
+++ b/spec/services/customers/update_service_spec.rb
@@ -356,7 +356,6 @@
         expect { customers_service.call }
           .to not_change(customer, :applied_dunning_campaign_id)
           .and not_change(customer, :exclude_from_dunning_campaign)
-          .and not_change(customer, :dunning_campaign_completed)
           .and not_change(customer, :last_dunning_campaign_attempt)
           .and not_change { customer.last_dunning_campaign_attempt_at.iso8601 }
 
@@ -370,8 +369,7 @@
             organization:,
             exclude_from_dunning_campaign: true,
             last_dunning_campaign_attempt: 3,
-            last_dunning_campaign_attempt_at: 2.days.ago,
-            dunning_campaign_completed: true
+            last_dunning_campaign_attempt_at: 2.days.ago
           )
         end
 
@@ -391,7 +389,6 @@
           expect { customers_service.call }
             .to change(customer, :applied_dunning_campaign_id).to(dunning_campaign.id)
             .and change(customer, :exclude_from_dunning_campaign).to(false)
-            .and change(customer, :dunning_campaign_completed).to(false)
             .and change(customer, :last_dunning_campaign_attempt).to(0)
             .and change(customer, :last_dunning_campaign_attempt_at).to(nil)
 
@@ -405,8 +402,7 @@
               organization:,
               applied_dunning_campaign: dunning_campaign,
               last_dunning_campaign_attempt: 3,
-              last_dunning_campaign_attempt_at: 2.days.ago,
-              dunning_campaign_completed: true
+              last_dunning_campaign_attempt_at: 2.days.ago
             )
           end
 
@@ -418,7 +414,6 @@
             expect { customers_service.call }
               .to change(customer, :applied_dunning_campaign_id).to(nil)
               .and change(customer, :exclude_from_dunning_campaign).to(true)
-              .and change(customer, :dunning_campaign_completed).to(false)
               .and change(customer, :last_dunning_campaign_attempt).to(0)
               .and change(customer, :last_dunning_campaign_attempt_at).to(nil)
 
@@ -434,8 +429,7 @@
               applied_dunning_campaign: dunning_campaign,
               exclude_from_dunning_campaign: false,
               last_dunning_campaign_attempt: 3,
-              last_dunning_campaign_attempt_at: 2.days.ago,
-              dunning_campaign_completed: true
+              last_dunning_campaign_attempt_at: 2.days.ago
             )
           end
 
@@ -445,7 +439,6 @@
             expect { customers_service.call }
               .to change(customer, :applied_dunning_campaign_id).to(nil)
               .and not_change(customer, :exclude_from_dunning_campaign)
-              .and change(customer, :dunning_campaign_completed).to(false)
               .and change(customer, :last_dunning_campaign_attempt).to(0)
               .and change(customer, :last_dunning_campaign_attempt_at).to(nil)
 
@@ -461,8 +454,7 @@
               applied_dunning_campaign: dunning_campaign,
               exclude_from_dunning_campaign: false,
               last_dunning_campaign_attempt: 3,
-              last_dunning_campaign_attempt_at: 2.days.ago,
-              dunning_campaign_completed: true
+              last_dunning_campaign_attempt_at: 2.days.ago
             )
           end
 
@@ -472,7 +464,6 @@
             expect { customers_service.call }
               .to not_change(customer, :applied_dunning_campaign_id)
               .and not_change(customer, :exclude_from_dunning_campaign)
-              .and not_change(customer, :dunning_campaign_completed)
               .and not_change(customer, :last_dunning_campaign_attempt)
               .and not_change(customer, :last_dunning_campaign_attempt_at)
 
diff --git a/spec/services/dunning_campaigns/bulk_process_service_spec.rb b/spec/services/dunning_campaigns/bulk_process_service_spec.rb
index 93c9901dbb5..0733dc36fa1 100644
--- a/spec/services/dunning_campaigns/bulk_process_service_spec.rb
+++ b/spec/services/dunning_campaigns/bulk_process_service_spec.rb
@@ -65,17 +65,6 @@
             .with(customer:, dunning_campaign_threshold:)
         end
 
-        context "when the customer has completed the dunning campaign" do
-          let(:customer) do
-            create :customer, organization:, currency:, dunning_campaign_completed: true
-          end
-
-          it "does not queue a job for the customer" do
-            result
-            expect(DunningCampaigns::ProcessAttemptJob).not_to have_been_enqueued
-          end
-        end
-
         context "when organization does not have auto_dunning feature enabled" do
           let(:organization) { create(:organization, premium_integrations: []) }
 
diff --git a/spec/services/dunning_campaigns/process_attempt_service_spec.rb b/spec/services/dunning_campaigns/process_attempt_service_spec.rb
index ec61314f743..fe7daf3fc5e 100644
--- a/spec/services/dunning_campaigns/process_attempt_service_spec.rb
+++ b/spec/services/dunning_campaigns/process_attempt_service_spec.rb
@@ -71,25 +71,23 @@
         expect { result && customer.reload }
           .to change(customer, :last_dunning_campaign_attempt).by(1)
           .and change(customer, :last_dunning_campaign_attempt_at).to(Time.zone.now)
-          .and not_change(customer, :dunning_campaign_completed).from(false)
       end
     end
 
-    context "when dunning campaign max attemp is reached" do
+    context "when dunning campaign max attempt is reached" do
       let(:customer) do
         create(
           :customer,
           organization:,
           currency:,
-          last_dunning_campaign_attempt: dunning_campaign.max_attempts - 1,
-          last_dunning_campaign_attempt_at: dunning_campaign.days_between_attempts.days.ago,
-          dunning_campaign_completed: false
+          last_dunning_campaign_attempt: dunning_campaign.max_attempts,
+          last_dunning_campaign_attempt_at: dunning_campaign.days_between_attempts.days.ago
         )
       end
 
-      it "updates customer's dunning campaign completed flag" do
-        expect { result && customer.reload }
-          .to change(customer, :dunning_campaign_completed).to(true)
+      it "does nothing" do
+        result
+        expect(PaymentRequests::CreateService).not_to have_received(:call)
       end
     end
 
@@ -136,22 +134,6 @@
       end
     end
 
-    context "when the customer has completed the dunning campaign" do
-      let(:customer) do
-        create(
-          :customer,
-          organization:,
-          currency:,
-          dunning_campaign_completed: true
-        )
-      end
-
-      it "does nothing" do
-        result
-        expect(PaymentRequests::CreateService).not_to have_received(:call)
-      end
-    end
-
     context "when days between attempts has not passed" do
       let(:customer) do
         create(
diff --git a/spec/services/dunning_campaigns/update_service_spec.rb b/spec/services/dunning_campaigns/update_service_spec.rb
index 61429aff70a..758d1acf2eb 100644
--- a/spec/services/dunning_campaigns/update_service_spec.rb
+++ b/spec/services/dunning_campaigns/update_service_spec.rb
@@ -79,17 +79,6 @@
           ]
         end
 
-        let(:customer_completed) do
-          create(
-            :customer,
-            currency: dunning_campaign_threshold.currency,
-            applied_dunning_campaign: dunning_campaign,
-            last_dunning_campaign_attempt: 4,
-            last_dunning_campaign_attempt_at: 1.day.ago,
-            dunning_campaign_completed: true,
-            organization: organization
-          )
-        end
         let(:customer_defaulting) do
           create(
             :customer,
@@ -97,7 +86,6 @@
             applied_dunning_campaign: nil,
             last_dunning_campaign_attempt: 4,
             last_dunning_campaign_attempt_at: 1.day.ago,
-            dunning_campaign_completed: false,
             organization: organization
           )
         end
@@ -108,7 +96,6 @@
             applied_dunning_campaign: dunning_campaign,
             last_dunning_campaign_attempt: 4,
             last_dunning_campaign_attempt_at: 1.day.ago,
-            dunning_campaign_completed: false,
             organization: organization
           )
         end
@@ -128,105 +115,6 @@
             .to have_attributes({amount_cents: 5_55, currency: "CHF"})
         end
 
-        context "when max_attempts is changed and some customers exceed it" do
-          let(:params) { {max_attempts: 3} }
-
-          before do
-            create(
-              :invoice,
-              organization:,
-              customer:,
-              payment_overdue: true,
-              total_amount_cents: dunning_campaign_threshold.amount_cents,
-              currency: dunning_campaign_threshold.currency
-            )
-          end
-
-          context "when the campaign is applied to the customer" do
-            let(:dunning_campaign) do
-              create(:dunning_campaign, organization:, applied_to_organization: false)
-            end
-
-            let(:customer) do
-              create(
-                :customer,
-                currency: dunning_campaign_threshold.currency,
-                applied_dunning_campaign: dunning_campaign,
-                last_dunning_campaign_attempt: 3,
-                last_dunning_campaign_attempt_at: 1.day.ago,
-                dunning_campaign_completed: false,
-                organization: organization
-              )
-            end
-
-            before { customer }
-
-            it "sets dunning_campaign_completed to true for customers whose last_dunning_campaign_attempt exceeds max_attempts" do
-              expect { result && customer.reload }
-                .to change(customer, :dunning_campaign_completed).to true
-            end
-
-            it "does not update customers whose last_dunning_campaign_attempt is within the new max_attempts" do
-              another_customer = create(
-                :customer,
-                currency: dunning_campaign_threshold.currency,
-                applied_dunning_campaign: dunning_campaign,
-                last_dunning_campaign_attempt: 2,
-                last_dunning_campaign_attempt_at: 1.day.ago,
-                dunning_campaign_completed: false,
-                organization: organization
-              )
-
-              expect { result && another_customer.reload }
-                .not_to change { another_customer.dunning_campaign_completed }
-
-              expect(result).to be_success
-            end
-          end
-
-          context "when the customer falls back to the campaign through the organization" do
-            let(:customer) do
-              create(
-                :customer,
-                currency: dunning_campaign_threshold.currency,
-                applied_dunning_campaign: nil,
-                last_dunning_campaign_attempt: 4,
-                last_dunning_campaign_attempt_at: 1.day.ago,
-                dunning_campaign_completed: false,
-                organization: organization
-              )
-            end
-
-            let(:dunning_campaign) do
-              create(:dunning_campaign, organization:, applied_to_organization: true)
-            end
-
-            before { customer }
-
-            it "sets dunning_campaign_completed to true for customers whose last_dunning_campaign_attempt exceeds max_attempts" do
-              expect { result && customer.reload }
-                .to change(customer, :dunning_campaign_completed).to true
-            end
-
-            it "does not update customers whose last_dunning_campaign_attempt is within the new max_attempts" do
-              another_customer = create(
-                :customer,
-                currency: dunning_campaign_threshold.currency,
-                applied_dunning_campaign: dunning_campaign,
-                last_dunning_campaign_attempt: 2,
-                last_dunning_campaign_attempt_at: 1.day.ago,
-                dunning_campaign_completed: false,
-                organization: organization
-              )
-
-              expect { result && another_customer.reload }
-                .not_to change { another_customer.dunning_campaign_completed }
-
-              expect(result).to be_success
-            end
-          end
-        end
-
         shared_examples "resets customer last dunning campaign attempt fields" do |customer_name|
           let(:customer) { send(customer_name) }
 
@@ -290,10 +178,6 @@
           context "when the customer defaults to the campaign applied to organization" do
             include_examples "resets customer last dunning campaign attempt fields", :customer_defaulting
           end
-
-          context "when the customer already completed the campaign" do
-            include_examples "does not reset customer last dunning campaign attempt fields", :customer_completed
-          end
         end
 
         context "when threshold currency changes and does not apply anymore to the customer" do
@@ -329,10 +213,6 @@
           context "when the customer defaults to the campaign applied to organization" do
             include_examples "resets customer last dunning campaign attempt fields", :customer_defaulting
           end
-
-          context "when the customer already completed the campaign" do
-            include_examples "does not reset customer last dunning campaign attempt fields", :customer_completed
-          end
         end
 
         context "when threshold amount_cents changes but it still applies to the customer" do
@@ -370,10 +250,6 @@
           context "when the customer defaults to the campaign applied to organization" do
             include_examples "does not reset customer last dunning campaign attempt fields", :customer_defaulting
           end
-
-          context "when the customer already completed the campaign" do
-            include_examples "does not reset customer last dunning campaign attempt fields", :customer_completed
-          end
         end
 
         context "when threshold currency changes but it still applies to the customer" do
@@ -418,10 +294,6 @@
           context "when the customer defaults to the campaign applied to organization" do
             include_examples "does not reset customer last dunning campaign attempt fields", :customer_defaulting
           end
-
-          context "when the customer already completed the campaign" do
-            include_examples "does not reset customer last dunning campaign attempt fields", :customer_completed
-          end
         end
 
         context "when a threshold is discarded and the campaign does not apply anymore to the customer" do
@@ -449,10 +321,6 @@
           context "when the customer defaults to the campaign applied to organization" do
             include_examples "resets customer last dunning campaign attempt fields", :customer_defaulting
           end
-
-          context "when the customer already completed the campaign" do
-            include_examples "does not reset customer last dunning campaign attempt fields", :customer_completed
-          end
         end
 
         context "when a threshold is discarded and replaced with one that still applies to the customer" do
@@ -489,10 +357,6 @@
           context "when the customer defaults to the campaign applied to organization" do
             include_examples "does not reset customer last dunning campaign attempt fields", :customer_defaulting
           end
-
-          context "when the customer already completed the campaign" do
-            include_examples "does not reset customer last dunning campaign attempt fields", :customer_completed
-          end
         end
 
         context "when the input does not include a thresholds" do
@@ -555,18 +419,16 @@
               .and change { customer.last_dunning_campaign_attempt_at }.from(a_value).to(nil)
           end
 
-          it "flags customers as not dunning campaign completed" do
+          it "resets last attempt" do
             customer = create(
               :customer,
               organization:,
-              dunning_campaign_completed: true,
               last_dunning_campaign_attempt: 3,
               last_dunning_campaign_attempt_at: Time.zone.now
             )
 
             expect { result && customer.reload }
-              .to change(customer, :dunning_campaign_completed).to(false)
-              .and change(customer, :last_dunning_campaign_attempt).to(0)
+              .to change(customer, :last_dunning_campaign_attempt).to(0)
               .and change(customer, :last_dunning_campaign_attempt_at).to(nil)
           end
         end
diff --git a/spec/services/invoices/update_service_spec.rb b/spec/services/invoices/update_service_spec.rb
index 7f815ccc77b..708efd12dee 100644
--- a/spec/services/invoices/update_service_spec.rb
+++ b/spec/services/invoices/update_service_spec.rb
@@ -40,7 +40,6 @@
       let(:customer) do
         create(
           :customer,
-          dunning_campaign_completed: true,
           last_dunning_campaign_attempt: 3,
           last_dunning_campaign_attempt_at: 1.day.ago
         )
@@ -58,8 +57,7 @@
 
       it "does not reset customer dunning campaign status counters" do
         expect { result && customer.reload }
-          .to not_change(customer, :dunning_campaign_completed)
-          .and not_change(customer, :last_dunning_campaign_attempt)
+          .to not_change(customer, :last_dunning_campaign_attempt)
           .and not_change { customer.last_dunning_campaign_attempt_at.to_i }
       end
 
@@ -71,8 +69,7 @@
 
         it "resets customer dunning campaign status counters" do
           expect { result && customer.reload }
-            .to change(customer, :dunning_campaign_completed).to(false)
-            .and change(customer, :last_dunning_campaign_attempt).to(0)
+            .to change(customer, :last_dunning_campaign_attempt).to(0)
             .and change(customer, :last_dunning_campaign_attempt_at).to(nil)
         end
       end
diff --git a/spec/services/payment_requests/payments/adyen_service_spec.rb b/spec/services/payment_requests/payments/adyen_service_spec.rb
index fa69cc0bb65..1f225b4d5a0 100644
--- a/spec/services/payment_requests/payments/adyen_service_spec.rb
+++ b/spec/services/payment_requests/payments/adyen_service_spec.rb
@@ -462,7 +462,6 @@
         create(
           :customer,
           payment_provider_code: code,
-          dunning_campaign_completed: true,
           last_dunning_campaign_attempt: 3,
           last_dunning_campaign_attempt_at: Time.zone.now
         )
@@ -482,8 +481,7 @@
 
       it "resets the customer dunning campaign counters" do
         expect { result && customer.reload }
-          .to change(customer, :dunning_campaign_completed).to(false)
-          .and change(customer, :last_dunning_campaign_attempt).to(0)
+          .to change(customer, :last_dunning_campaign_attempt).to(0)
           .and change(customer, :last_dunning_campaign_attempt_at).to(nil)
 
         expect(result).to be_success
@@ -494,8 +492,7 @@
 
         it "doest not reset the customer dunning campaign counters" do
           expect { result && customer.reload }
-            .to not_change(customer, :dunning_campaign_completed)
-            .and not_change(customer, :last_dunning_campaign_attempt)
+            .to not_change(customer, :last_dunning_campaign_attempt)
             .and not_change { customer.last_dunning_campaign_attempt_at&.to_i }
 
           expect(result).to be_success
diff --git a/spec/services/payment_requests/payments/gocardless_service_spec.rb b/spec/services/payment_requests/payments/gocardless_service_spec.rb
index 58a2480bb0c..aebef0cbf00 100644
--- a/spec/services/payment_requests/payments/gocardless_service_spec.rb
+++ b/spec/services/payment_requests/payments/gocardless_service_spec.rb
@@ -321,7 +321,6 @@
         create(
           :customer,
           payment_provider_code: code,
-          dunning_campaign_completed: true,
           last_dunning_campaign_attempt: 3,
           last_dunning_campaign_attempt_at: Time.zone.now
         )
@@ -341,8 +340,7 @@
 
       it "resets the customer dunning campaign counters" do
         expect { result && customer.reload }
-          .to change(customer, :dunning_campaign_completed).to(false)
-          .and change(customer, :last_dunning_campaign_attempt).to(0)
+          .to change(customer, :last_dunning_campaign_attempt).to(0)
           .and change(customer, :last_dunning_campaign_attempt_at).to(nil)
 
         expect(result).to be_success
@@ -353,8 +351,7 @@
 
         it "doest not reset the customer dunning campaign counters" do
           expect { result && customer.reload }
-            .to not_change(customer, :dunning_campaign_completed)
-            .and not_change(customer, :last_dunning_campaign_attempt)
+            .to not_change(customer, :last_dunning_campaign_attempt)
             .and not_change { customer.last_dunning_campaign_attempt_at&.to_i }
 
           expect(result).to be_success
diff --git a/spec/services/payment_requests/payments/stripe_service_spec.rb b/spec/services/payment_requests/payments/stripe_service_spec.rb
index b39a04fecba..17db961f8bd 100644
--- a/spec/services/payment_requests/payments/stripe_service_spec.rb
+++ b/spec/services/payment_requests/payments/stripe_service_spec.rb
@@ -508,7 +508,6 @@
         create(
           :customer,
           payment_provider_code: code,
-          dunning_campaign_completed: true,
           last_dunning_campaign_attempt: 3,
           last_dunning_campaign_attempt_at: Time.zone.now
         )
@@ -528,8 +527,7 @@
 
       it "resets the customer dunning campaign counters" do
         expect { result && customer.reload }
-          .to change(customer, :dunning_campaign_completed).to(false)
-          .and change(customer, :last_dunning_campaign_attempt).to(0)
+          .to change(customer, :last_dunning_campaign_attempt).to(0)
           .and change(customer, :last_dunning_campaign_attempt_at).to(nil)
 
         expect(result).to be_success
@@ -540,8 +538,7 @@
 
         it "doest not reset the customer dunning campaign counters" do
           expect { result && customer.reload }
-            .to not_change(customer, :dunning_campaign_completed)
-            .and not_change(customer, :last_dunning_campaign_attempt)
+            .to not_change(customer, :last_dunning_campaign_attempt)
             .and not_change { customer.last_dunning_campaign_attempt_at&.to_i }
 
           expect(result).to be_success