CRM457-2149: Don't override adjustment comments when removing all uplifts

app/forms/nsm/uplift/base_form.rb

@@ -21,7 +21,10 @@ def save
 
         Claim.transaction do
           claim.data[self.class::SCOPE].each do |selected_record|
-            row = self.class::Remover.new(claim:, explanation:, current_user:, selected_record:)
+            row = self.class::Remover.new(claim: claim,
+                                          explanation: explanation_for(selected_record),
+                                          current_user: current_user,
+                                          selected_record: selected_record)
             next unless row.valid?
 
             row.save
@@ -34,6 +37,10 @@ def save
       rescue StandardError
         false
       end
+
+      def explanation_for(record)
+        [record['adjustment_comment'].presence, explanation].compact.join("\n\n")
+      end
     end
   end
 end

spec/forms/nsm/uplift/base_form_spec.rb

@@ -51,6 +51,23 @@
       end
     end
 
+    context 'when the record has already been adjusted' do
+      before do
+        claim.data['letters_and_calls'][0]['adjustment_comment'] = 'Previous comment'
+      end
+
+      it 'preserves the previous comment' do
+        subject.save
+        expect(implementation_class::Remover).to have_received(:new)
+          .with(
+            claim: claim,
+            explanation: "Previous comment\n\n#{explanation}",
+            current_user: current_user,
+            selected_record: claim.data['letters_and_calls'][0]
+          )
+      end
+    end
+
     context 'when invalid' do
       let(:explanation) { nil }