diff --git a/src/actions/__tests__/page-template-actions.test.js b/src/actions/__tests__/page-template-actions.test.js
new file mode 100644
index 000000000..ee4fbe061
--- /dev/null
+++ b/src/actions/__tests__/page-template-actions.test.js
@@ -0,0 +1,69 @@
+import { describe, it, expect } from "@jest/globals";
+import {
+  PAGE_MODULES_DOWNLOAD,
+  PAGES_MODULE_KINDS
+} from "../../utils/constants";
+import { normalizeEntity } from "../page-template-actions";
+
+const buildModule = (kind, type, file) => ({
+  kind,
+  type,
+  file
+});
+
+describe("Page Template Actions", () => {
+  describe("normalizeEntity", () => {
+    it("should include new file in payload", () => {
+      const entity = {
+        modules: [
+          buildModule(
+            PAGES_MODULE_KINDS.DOCUMENT,
+            PAGE_MODULES_DOWNLOAD.FILE,
+            [{ name: "newfile.pdf" }] // new file, no id
+          )
+        ]
+      };
+      const result = normalizeEntity(entity);
+      expect(result.modules[0].file).toBeDefined();
+      expect(result.modules[0].file.name).toBe("newfile.pdf");
+    });
+
+    it("should omit existing file from payload", () => {
+      const entity = {
+        modules: [
+          buildModule(PAGES_MODULE_KINDS.DOCUMENT, PAGE_MODULES_DOWNLOAD.FILE, [
+            { id: 123, name: "existing.pdf" }
+          ])
+        ]
+      };
+      const result = normalizeEntity(entity);
+      expect(result.modules[0].file).toBeUndefined();
+    });
+
+    it("should omit file if not FILE type", () => {
+      const entity = {
+        modules: [
+          buildModule(PAGES_MODULE_KINDS.DOCUMENT, "NOT_FILE", [
+            { name: "other.pdf" }
+          ])
+        ]
+      };
+      const result = normalizeEntity(entity);
+      expect(result.modules[0].file).toBeUndefined();
+    });
+
+    it("should handle file as null", () => {
+      const entity = {
+        modules: [
+          buildModule(
+            PAGES_MODULE_KINDS.DOCUMENT,
+            PAGE_MODULES_DOWNLOAD.FILE,
+            null
+          )
+        ]
+      };
+      const result = normalizeEntity(entity);
+      expect(result.modules[0].file).toBeUndefined();
+    });
+  });
+});
diff --git a/src/actions/page-template-actions.js b/src/actions/page-template-actions.js
index fa23f5ca3..ecf7ca78b 100644
--- a/src/actions/page-template-actions.js
+++ b/src/actions/page-template-actions.js
@@ -142,7 +142,7 @@ export const resetPageTemplateForm = () => (dispatch) => {
   dispatch(createAction(RESET_PAGE_TEMPLATE_FORM)({}));
 };
 
-const normalizeEntity = (entity) => {
+export const normalizeEntity = (entity) => {
   const normalizedEntity = { ...entity };
   normalizedEntity.modules = normalizePageTemplateModules(entity.modules);
   return normalizedEntity;
diff --git a/src/utils/__tests__/page-template.test.js b/src/utils/__tests__/page-template.test.js
index b5e9f2197..60d402b48 100644
--- a/src/utils/__tests__/page-template.test.js
+++ b/src/utils/__tests__/page-template.test.js
@@ -121,7 +121,7 @@ describe("normalizePageTemplateModules", () => {
   });
 
   describe("DOCUMENT kind — FILE type", () => {
-    it("should extract the first element from the file array and delete external_url", () => {
+    it("should remove file and external_url for existing files", () => {
       const fileObj = {
         id: 10,
         storage_key: "key/file.pdf",
@@ -134,18 +134,18 @@ describe("normalizePageTemplateModules", () => {
         external_url: "https://example.com"
       };
       const [result] = normalizePageTemplateModules([module]);
-      expect(result.file).toStrictEqual(fileObj);
+      expect(result.file).toBeUndefined();
       expect(result.external_url).toBeUndefined();
     });
 
-    it("should set file to null when the file array is empty", () => {
+    it("should remove file when the file array is empty", () => {
       const module = {
         kind: PAGES_MODULE_KINDS.DOCUMENT,
         type: PAGE_MODULES_DOWNLOAD.FILE,
         file: []
       };
       const [result] = normalizePageTemplateModules([module]);
-      expect(result.file).toBeNull();
+      expect(result.file).toBeUndefined();
     });
   });
 
diff --git a/src/utils/page-template.js b/src/utils/page-template.js
index 45ad5f168..c57d8d831 100644
--- a/src/utils/page-template.js
+++ b/src/utils/page-template.js
@@ -61,7 +61,15 @@ export const normalizePageTemplateModules = (modules = [], timeZone = null) =>
 
     if (module.kind === PAGES_MODULE_KINDS.DOCUMENT) {
       if (module.type === PAGE_MODULES_DOWNLOAD.FILE) {
-        normalizedModule.file = module.file?.[0] || null;
+        // Only new files (without id or file_id) are sent in the payload; existing files are omitted to prevent overwriting.
+        const file = Array.isArray(module.file) ? module.file[0] : null;
+        const isNewFile =
+          file && typeof file === "object" && !file.id && !file.file_id;
+        if (isNewFile) {
+          normalizedModule.file = file;
+        } else {
+          delete normalizedModule.file;
+        }
         delete normalizedModule.external_url;
       } else {
         delete normalizedModule.file;
@@ -73,3 +81,4 @@ export const normalizePageTemplateModules = (modules = [], timeZone = null) =>
 
     return normalizedModule;
   });
+  
\ No newline at end of file