diff --git a/src/documents/tests/test_api_documents.py b/src/documents/tests/test_api_documents.py
index 538fc6dd3..5174e4da5 100644
--- a/src/documents/tests/test_api_documents.py
+++ b/src/documents/tests/test_api_documents.py
@@ -1119,21 +1119,19 @@ class TestDocumentApi(DirectoriesMixin, DocumentConsumeDelayMixin, APITestCase):
             [u1_doc1.id],
         )
 
-    def test_pagination_all(self) -> None:
+    def test_pagination_results(self) -> None:
         """
         GIVEN:
             - A set of 50 documents
         WHEN:
             - API request for document filtering
         THEN:
-            - Results are paginated (25 items) and response["all"] returns all ids (50 items)
+            - Results are paginated (25 items) and count reflects all results (50 items)
         """
         t = Tag.objects.create(name="tag")
-        docs = []
         for i in range(50):
             d = Document.objects.create(checksum=i, content=f"test{i}")
             d.tags.add(t)
-            docs.append(d)
 
         response = self.client.get(
             f"/api/documents/?tags__id__in={t.id}",
@@ -1141,7 +1139,32 @@ class TestDocumentApi(DirectoriesMixin, DocumentConsumeDelayMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         results = response.data["results"]
         self.assertEqual(len(results), 25)
-        self.assertEqual(len(response.data["all"]), 50)
+        self.assertEqual(response.data["count"], 50)
+        self.assertNotIn("all", response.data)
+
+    def test_pagination_all_for_api_version_9(self) -> None:
+        """
+        GIVEN:
+            - A set of documents matching a filter
+        WHEN:
+            - API request uses legacy version 9
+        THEN:
+            - Response includes "all" for backward compatibility
+        """
+        t = Tag.objects.create(name="tag")
+        docs = []
+        for i in range(4):
+            d = Document.objects.create(checksum=i, content=f"test{i}")
+            d.tags.add(t)
+            docs.append(d)
+
+        response = self.client.get(
+            f"/api/documents/?tags__id__in={t.id}",
+            headers={"Accept": "application/json; version=9"},
+        )
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertIn("all", response.data)
         self.assertCountEqual(response.data["all"], [d.id for d in docs])
 
     def test_list_with_include_selection_data(self) -> None:
diff --git a/src/documents/tests/test_api_objects.py b/src/documents/tests/test_api_objects.py
index 008d2824d..0b8cd5108 100644
--- a/src/documents/tests/test_api_objects.py
+++ b/src/documents/tests/test_api_objects.py
@@ -145,6 +145,22 @@ class TestApiObjects(DirectoriesMixin, APITestCase):
             response.data["last_correspondence"],
         )
 
+    def test_paginated_objects_include_all_only_for_legacy_version(self) -> None:
+        response_v10 = self.client.get("/api/correspondents/")
+        self.assertEqual(response_v10.status_code, status.HTTP_200_OK)
+        self.assertNotIn("all", response_v10.data)
+
+        response_v9 = self.client.get(
+            "/api/correspondents/",
+            headers={"Accept": "application/json; version=9"},
+        )
+        self.assertEqual(response_v9.status_code, status.HTTP_200_OK)
+        self.assertIn("all", response_v9.data)
+        self.assertCountEqual(
+            response_v9.data["all"],
+            [self.c1.id, self.c2.id, self.c3.id],
+        )
+
 
 class TestApiStoragePaths(DirectoriesMixin, APITestCase):
     ENDPOINT = "/api/storage_paths/"
diff --git a/src/documents/tests/test_api_search.py b/src/documents/tests/test_api_search.py
index e26345dca..3ec65d72a 100644
--- a/src/documents/tests/test_api_search.py
+++ b/src/documents/tests/test_api_search.py
@@ -68,26 +68,48 @@ class TestDocumentSearchApi(DirectoriesMixin, APITestCase):
         results = response.data["results"]
         self.assertEqual(response.data["count"], 3)
         self.assertEqual(len(results), 3)
-        self.assertCountEqual(response.data["all"], [d1.id, d2.id, d3.id])
 
         response = self.client.get("/api/documents/?query=september")
         results = response.data["results"]
         self.assertEqual(response.data["count"], 1)
         self.assertEqual(len(results), 1)
-        self.assertCountEqual(response.data["all"], [d3.id])
         self.assertEqual(results[0]["original_file_name"], "someepdf.pdf")
 
         response = self.client.get("/api/documents/?query=statement")
         results = response.data["results"]
         self.assertEqual(response.data["count"], 2)
         self.assertEqual(len(results), 2)
-        self.assertCountEqual(response.data["all"], [d2.id, d3.id])
 
         response = self.client.get("/api/documents/?query=sfegdfg")
         results = response.data["results"]
         self.assertEqual(response.data["count"], 0)
         self.assertEqual(len(results), 0)
-        self.assertCountEqual(response.data["all"], [])
+
+    def test_search_returns_all_for_api_version_9(self) -> None:
+        d1 = Document.objects.create(
+            title="invoice",
+            content="bank payment",
+            checksum="A",
+            pk=1,
+        )
+        d2 = Document.objects.create(
+            title="bank statement",
+            content="bank transfer",
+            checksum="B",
+            pk=2,
+        )
+        with AsyncWriter(index.open_index()) as writer:
+            index.update_document(writer, d1)
+            index.update_document(writer, d2)
+
+        response = self.client.get(
+            "/api/documents/?query=bank",
+            headers={"Accept": "application/json; version=9"},
+        )
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertIn("all", response.data)
+        self.assertCountEqual(response.data["all"], [d1.id, d2.id])
 
     def test_search_with_include_selection_data(self) -> None:
         correspondent = Correspondent.objects.create(name="c1")