diff --git a/api.planx.uk/publish.js b/api.planx.uk/publish.js
index 99f40f3266..3929aeed48 100644
--- a/api.planx.uk/publish.js
+++ b/api.planx.uk/publish.js
@@ -108,6 +108,7 @@ const publishFlow = async (req, res) => {
       const publishedFlow =
         response.insert_published_flows_one &&
         response.insert_published_flows_one.data;
+
       const alteredNodes = Object.keys(delta).map((key) => ({
         id: key,
         ...publishedFlow[key],
@@ -115,7 +116,6 @@ const publishFlow = async (req, res) => {
 
       res.json({
         alteredNodes,
-        publishedFlow,
       });
     } else {
       res.json({
diff --git a/api.planx.uk/publish.test.js b/api.planx.uk/publish.test.js
index 7adf3c3e0e..1760ea5e4d 100644
--- a/api.planx.uk/publish.test.js
+++ b/api.planx.uk/publish.test.js
@@ -1,8 +1,7 @@
 const supertest = require("supertest");
 
-const { authHeader } = require("./tests/mockJWT");
-
 const { queryMock } = require("./tests/graphqlQueryMock");
+const { authHeader } = require("./tests/mockJWT");
 const app = require("./server");
 
 beforeEach(() => {
@@ -11,7 +10,7 @@ beforeEach(() => {
     matchOnVariables: false,
     data: {
       flows_by_pk: {
-        data: currentFlowData,
+        data: mockFlowData,
       },
     },
   });
@@ -23,7 +22,7 @@ beforeEach(() => {
       flows_by_pk: {
         published_flows: [
           {
-            data: currentFlowDataFlattened,
+            data: mockFlowData,
           },
         ],
       },
@@ -35,7 +34,7 @@ beforeEach(() => {
     matchOnVariables: false,
     data: {
       insert_published_flows_one: {
-        data: currentFlowDataFlattened,
+        data: mockFlowData,
       },
     },
   });
@@ -54,124 +53,67 @@ it("does not update if there are no new changes", async () => {
     });
 });
 
-it("updates if there have been changes", async () => {
+it("updates published flow and returns altered nodes if there have been changes", async () => {
+  const alteredFlow = {
+    ...mockFlowData,
+    "4CJgXe8Ttl": {
+      data: {
+        flagSet: "Planning permission",
+        overrides: {
+          NO_APP_REQUIRED: {
+            heading: "Some Other Heading",
+          },
+        },
+      },
+      type: 3,
+    },
+  };
+
+  queryMock.mockQuery({
+    name: "GetFlowData",
+    matchOnVariables: false,
+    data: {
+      flows_by_pk: {
+        data: alteredFlow,
+      },
+    },
+  });
+
+  queryMock.mockQuery({
+    name: "PublishFlow",
+    matchOnVariables: false,
+    data: {
+      insert_published_flows_one: {
+        data: alteredFlow,
+      },
+    },
+  });
+
   await supertest(app)
     .post("/flows/1/publish")
     .set(authHeader())
     .expect(200)
     .then((res) => {
       expect(res.body).toEqual({
-        alteredNodes: null,
-        message: "No new changes",
+        alteredNodes: [
+          {
+            id: "4CJgXe8Ttl",
+            type: 3,
+            data: {
+              flagSet: "Planning permission",
+              overrides: {
+                NO_APP_REQUIRED: {
+                  heading: "Some Other Heading",
+                },
+              },
+            },
+          },
+        ],
       });
     });
 });
 
-// MOCK DATA: currentFlowData, currentFlowDataFlattened, stalePublishedFlow
-const currentFlowData = {
-  _root: {
-    edges: [
-      "RYYckLE2cH",
-      "R99ncwKifm",
-      "3qssvGXmMO",
-      "SEp0QeNsTS",
-      "q8Foul9hRN",
-      "4CJgXe8Ttl",
-      "dnVqd6zt4N",
-    ],
-  },
-  "3qssvGXmMO": {
-    type: 9,
-  },
-  "4CJgXe8Ttl": {
-    data: {
-      flagSet: "Planning permission",
-      overrides: {
-        NO_APP_REQUIRED: {
-          heading: "wooo",
-        },
-      },
-    },
-    type: 3,
-  },
-  "5sWfsvXphd": {
-    data: {
-      text: "?",
-    },
-    type: 200,
-  },
-  BV2VJhOC0I: {
-    data: {
-      text: "internal question",
-    },
-    type: 100,
-    edges: ["ScjaYmpbVK", "b7j9tq22dj"],
-  },
-  OL9JENldcI: {
-    data: {
-      text: "!!",
-    },
-    type: 200,
-  },
-  R99ncwKifm: {
-    data: {
-      text: "portal",
-    },
-    type: 300,
-    edges: ["BV2VJhOC0I"],
-  },
-  RYYckLE2cH: {
-    data: {
-      text: "Question",
-    },
-    type: 100,
-    edges: ["5sWfsvXphd", "OL9JENldcI"],
-  },
-  SEp0QeNsTS: {
-    data: {
-      fn: "application.fee.payable",
-      url: "http://localhost:7002/pay",
-      color: "#EFEFEF",
-      title: "Pay for your application",
-      description:
-        '<p>The planning fee covers the cost of processing your application.         Find out more about how planning fees are calculated          <a href="https://www.gov.uk/guidance/fees-for-planning-applications" target="_self">here</a>.</p>',
-    },
-    type: 400,
-  },
-  ScjaYmpbVK: {
-    data: {
-      text: "?",
-    },
-    type: 200,
-  },
-  b7j9tq22dj: {
-    data: {
-      text: "*",
-    },
-    type: 200,
-  },
-  dnVqd6zt4N: {
-    data: {
-      heading: "Application sent",
-      moreInfo:
-        "<h2>You will be contacted</h2>\n<ul>\n<li>if there is anything missing from the information you have provided so far</li>\n<li>if any additional information is required</li>\n<li>to arrange a site visit, if required</li>\n<li>to inform you whether a certificate has been granted or not</li>\n</ul>\n",
-      contactInfo:
-        '<p>You can contact us at <a href="mailto:planning@lambeth.gov.uk" target="_self"><strong>planning@lambeth.gov.uk</strong></a></p>\n',
-      description:
-        "A payment receipt has been emailed to you. You will also receive an email to confirm when your application has been received.",
-      feedbackCTA: "What did you think of this service? (takes 30 seconds)",
-    },
-    type: 725,
-  },
-  q8Foul9hRN: {
-    data: {
-      url: "http://localhost:7002/bops/southwark",
-    },
-    type: 650,
-  },
-};
-
-const currentFlowDataFlattened = {
+const mockFlowData = {
   _root: {
     edges: [
       "RYYckLE2cH",
@@ -191,7 +133,7 @@ const currentFlowDataFlattened = {
       flagSet: "Planning permission",
       overrides: {
         NO_APP_REQUIRED: {
-          heading: "wooo",
+          heading: "Congratulations!",
         },
       },
     },