diff --git a/src/bonsai/bonsai/bim/module/group/__init__.py b/src/bonsai/bonsai/bim/module/group/__init__.py
index 45a509c3a9..86e8536672 100644
--- a/src/bonsai/bonsai/bim/module/group/__init__.py
+++ b/src/bonsai/bonsai/bim/module/group/__init__.py
@@ -32,7 +32,6 @@ classes = (
     operator.SetGroupVisibility,
     operator.ToggleGroup,
     operator.UnassignGroup,
-    prop.ExpandedGroups,
     prop.Group,
     prop.BIMGroupProperties,
     ui.BIM_PT_groups,
@@ -43,9 +42,7 @@ classes = (
 
 def register():
     bpy.types.Scene.BIMGroupProperties = bpy.props.PointerProperty(type=prop.BIMGroupProperties)
-    bpy.types.Scene.ExpandedGroups = bpy.props.PointerProperty(type=prop.ExpandedGroups)
 
 
 def unregister():
     del bpy.types.Scene.BIMGroupProperties
-    del bpy.types.Scene.ExpandedGroups
diff --git a/src/bonsai/bonsai/bim/module/group/operator.py b/src/bonsai/bonsai/bim/module/group/operator.py
index bc017edec7..80120da77d 100644
--- a/src/bonsai/bonsai/bim/module/group/operator.py
+++ b/src/bonsai/bonsai/bim/module/group/operator.py
@@ -32,7 +32,7 @@ class LoadGroups(bpy.types.Operator, tool.Ifc.Operator):
 
     def _execute(self, context):
         self.props = tool.Blender.get_group_props()
-        self.expanded_groups = json.loads(context.scene.ExpandedGroups.json_string)
+        self.expanded_groups = json.loads(self.props.expanded_groups_json)
         self.props.groups.clear()
 
         groups = [
@@ -79,12 +79,13 @@ class ToggleGroup(bpy.types.Operator, tool.Ifc.Operator):
     option: bpy.props.StringProperty(name="Expand or Collapse")
 
     def _execute(self, context):
-        expanded_groups = set(json.loads(context.scene.ExpandedGroups.json_string))
+        props = tool.Blender.get_group_props()
+        expanded_groups = set(json.loads(props.expanded_groups_json))
         if self.option == "Expand":
             expanded_groups.add(self.ifc_definition_id)
         elif self.ifc_definition_id in expanded_groups:
             expanded_groups.remove(self.ifc_definition_id)
-        context.scene.ExpandedGroups.json_string = json.dumps(list(expanded_groups))
+        props.expanded_groups_json = json.dumps(list(expanded_groups))
         bpy.ops.bim.load_groups()
         return {"FINISHED"}
 
diff --git a/src/bonsai/bonsai/bim/module/group/prop.py b/src/bonsai/bonsai/bim/module/group/prop.py
index af6b60ddd8..13af83f704 100644
--- a/src/bonsai/bonsai/bim/module/group/prop.py
+++ b/src/bonsai/bonsai/bim/module/group/prop.py
@@ -38,13 +38,6 @@ def update_active_group_index(self, context):
     refresh_pset()
 
 
-class ExpandedGroups(StrProperty):
-    json_string: StringProperty(name="JSON String", default="[]")
-
-    if TYPE_CHECKING:
-        json_string: str
-
-
 class Group(PropertyGroup):
     name: StringProperty(name="Name")
     ifc_definition_id: IntProperty(name="IFC Definition ID")
@@ -66,6 +59,7 @@ class BIMGroupProperties(PropertyGroup):
     groups: CollectionProperty(name="Groups", type=Group)
     active_group_index: IntProperty(name="Active Group Index", update=update_active_group_index)
     active_group_id: IntProperty(name="Active Group Id")
+    expanded_groups_json: StringProperty(name="JSON String", default="[]")
 
     if TYPE_CHECKING:
         group_attributes: bpy.types.bpy_prop_collection_idprop[Attribute]
@@ -73,6 +67,7 @@ class BIMGroupProperties(PropertyGroup):
         groups: bpy.types.bpy_prop_collection_idprop[Group]
         active_group_index: int
         active_group_id: int
+        expanded_groups_json: str
 
     @property
     def active_group(self) -> Union[Group, None]: