Fix #7397 - don't delete aggregate if relatingobject is a IfcSpatialElement

src/bonsai/bonsai/bim/module/aggregate/operator.py

@@ -127,6 +127,10 @@ class BIM_OT_aggregate_unassign_object(bpy.types.Operator, tool.Ifc.Operator):
         # Second pass: delete aggregates that now have no parts
         deleted_aggregates = []
         for aggregate in aggregates_to_check:
+            # Skip spatial elements - they should not be deleted even if empty
+            if aggregate.is_a("IfcSpatialElement"):
+                continue
+            
             related_objects = ifcopenshell.util.element.get_parts(aggregate)
             if len(related_objects) == 0:
                 aggregate_name = aggregate.Name or f"{aggregate.is_a()} #{aggregate.id()}"

src/bonsai/bonsai/bim/module/geometry/operator.py

@@ -975,6 +975,10 @@ class OverrideDelete(bpy.types.Operator):
             except:
                 continue
 
+            # Skip spatial elements - they should not be deleted even if empty
+            if aggregate.is_a("IfcSpatialElement"):
+                continue
+
             related_objects = ifcopenshell.util.element.get_parts(aggregate)
             if len(related_objects) == 0:
                 aggregate_name = aggregate.Name or f"{aggregate.is_a()} #{aggregate.id()}"