See #5919. You can now add openings through "Add Element" just like everything else.

This means that openings can (and default to) start with extrusions. It
also starts to open up the possibility to add other types of feature
elements. Still really incomplete.

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

@@ -735,16 +735,10 @@ class OverrideDelete(bpy.types.Operator):
             else:
                 bpy.data.objects.remove(obj)
 
-        while True:
-            has_removed_opening = False
-            openings = context.scene.BIMModelProperties.openings
-            for i, opening in enumerate(openings):
-                if not (element := tool.Ifc.get_entity(opening.obj)):
-                    has_removed_opening = True
-                    bpy.data.objects.remove(opening.obj)
-                    context.scene.BIMModelProperties.openings.remove(i)
-            if not has_removed_opening:
-                break
+        for opening in context.scene.BIMModelProperties.openings:
+            if not tool.Ifc.get_entity(opening.obj):
+                bpy.data.objects.remove(opening.obj)
+        tool.Model.purge_scene_openings()
 
         if self.is_batch:
             old_file = tool.Ifc.get()