Remove constraints when object is unassigned from the aggregate.

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

@@ -96,6 +96,8 @@ class BIM_OT_aggregate_unassign_object(bpy.types.Operator, tool.Ifc.Operator):
                 related_obj=tool.Ifc.get_object(element),
             )
 
+            tool.Aggregate.remove_constraints(tool.Ifc.get_object(element))
+
             # Removes Pset related to Linked Aggregates
             if not element.is_a("IfcElementAssembly"):
                 pset = ifcopenshell.util.element.get_pset(element, "BBIM_Linked_Aggregate")

src/bonsai/bonsai/tool/aggregate.py

@@ -85,7 +85,7 @@ class Aggregate(bonsai.core.tool.Aggregate):
         return parts
 
     @classmethod
-    def constrain_parts_to_aggregate(cls, aggregate: ifcopenshell.entity_instance):
+    def constrain_parts_to_aggregate(cls, aggregate: bpy.types.Object):
         agg_element = tool.Ifc.get_entity(aggregate)
         parts = ifcopenshell.util.element.get_parts(agg_element)
         parts_objs = [tool.Ifc.get_object(p) for p in parts]
@@ -95,3 +95,11 @@ class Aggregate(bonsai.core.tool.Aggregate):
                 obj.constraints.remove(constraint)
             constraint = obj.constraints.new("CHILD_OF")
             constraint.target = aggregate
+
+    @classmethod
+    def remove_constraints(cls, part: bpy.types.Object):
+        constraint = next((c for c in part.constraints if c.type == "CHILD_OF"), None)
+        if constraint:
+            part.constraints.remove(constraint)
+
+