diff --git a/cms/djangoapps/contentstore/rest_api/v1/serializers/vertical_block.py b/cms/djangoapps/contentstore/rest_api/v1/serializers/vertical_block.py
index 172762c20fa9..a976b4954fac 100644
--- a/cms/djangoapps/contentstore/rest_api/v1/serializers/vertical_block.py
+++ b/cms/djangoapps/contentstore/rest_api/v1/serializers/vertical_block.py
@@ -98,9 +98,9 @@ class ChildVerticalContainerSerializer(serializers.Serializer):
     Serializer for representing a xblock child of vertical container.
     """
 
-    name = serializers.CharField(source="display_name_with_default")
-    block_id = serializers.CharField(source="location")
-    block_type = serializers.CharField(source="location.block_type")
+    name = serializers.CharField()
+    block_id = serializers.CharField()
+    block_type = serializers.CharField()
     actions = serializers.SerializerMethodField()
     user_partition_info = serializers.DictField()
     user_partitions = serializers.ListField()
diff --git a/cms/djangoapps/contentstore/rest_api/v1/views/tests/test_vertical_block.py b/cms/djangoapps/contentstore/rest_api/v1/views/tests/test_vertical_block.py
index 9d37482c7bf5..063ba9ed5420 100644
--- a/cms/djangoapps/contentstore/rest_api/v1/views/tests/test_vertical_block.py
+++ b/cms/djangoapps/contentstore/rest_api/v1/views/tests/test_vertical_block.py
@@ -5,6 +5,7 @@
 from rest_framework import status
 
 from cms.djangoapps.contentstore.tests.utils import CourseTestCase
+from xmodule.partitions.partitions import ENROLLMENT_TRACK_PARTITION_ID
 from xmodule.modulestore.django import (
     modulestore,
 )  # lint-amnesty, pylint: disable=wrong-import-order
@@ -154,6 +155,28 @@ def test_children_content(self):
         url = self.get_reverse_url(self.vertical.location)
         response = self.client.get(url)
 
+        expected_user_partition_info = {
+            "selectable_partitions": [],
+            "selected_partition_index": -1,
+            "selected_groups_label": ""
+        }
+
+        expected_user_partitions = [
+            {
+                "id": ENROLLMENT_TRACK_PARTITION_ID,
+                "name": "Enrollment Track Groups",
+                "scheme": "enrollment_track",
+                "groups": [
+                    {
+                        "id": 1,
+                        "name": "Audit",
+                        "selected": False,
+                        "deleted": False
+                    }
+                ]
+            }
+        ]
+
         expected_response = [
             {
                 "name": self.html_unit_first.display_name_with_default,
@@ -165,7 +188,9 @@ def test_children_content(self):
                     "can_move": True,
                     "can_manage_access": True,
                     "can_delete": True
-                }
+                },
+                "user_partition_info": expected_user_partition_info,
+                "user_partitions": expected_user_partitions
             },
             {
                 "name": self.html_unit_second.display_name_with_default,
@@ -177,7 +202,9 @@ def test_children_content(self):
                     "can_move": True,
                     "can_manage_access": True,
                     "can_delete": True
-                }
+                },
+                "user_partition_info": expected_user_partition_info,
+                "user_partitions": expected_user_partitions,
             },
         ]
         self.assertEqual(response.data["children"], expected_response)
diff --git a/cms/djangoapps/contentstore/rest_api/v1/views/vertical_block.py b/cms/djangoapps/contentstore/rest_api/v1/views/vertical_block.py
index dba29c72f58f..a1e87e780bf3 100644
--- a/cms/djangoapps/contentstore/rest_api/v1/views/vertical_block.py
+++ b/cms/djangoapps/contentstore/rest_api/v1/views/vertical_block.py
@@ -229,18 +229,22 @@ def get(self, request: Request, usage_key_string: str):
         """
         usage_key = self.get_object(usage_key_string)
         current_xblock = get_xblock(usage_key, request.user)
-        # load course once to reuse it for user_partitions query
-        course = modulestore().get_course(current_xblock.location.course_key)
 
         with modulestore().bulk_operations(usage_key.course_key):
+            # load course once to reuse it for user_partitions query
+            course = modulestore().get_course(current_xblock.location.course_key)
             children = []
             for child in current_xblock.children:
                 child_info = modulestore().get_item(child)
                 user_partition_info = get_visibility_partition_info(child_info, course=course)
                 user_partitions = get_user_partition_info(child_info, course=course)
-                setattr(child_info, 'user_partition_info', user_partition_info)
-                setattr(child_info, 'user_partitions', user_partitions)
-                children.append(child_info)
+                children.append({
+                    "name": child_info.display_name_with_default,
+                    "block_id": child_info.location,
+                    "block_type": child_info.location.block_type,
+                    "user_partition_info": user_partition_info,
+                    "user_partitions": user_partitions,
+                })
 
             is_published = not modulestore().has_changes(current_xblock)
             container_data = {"children": children, "is_published": is_published}