diff --git a/src/bonsai/bonsai/bim/module/model/mep.py b/src/bonsai/bonsai/bim/module/model/mep.py
index 8886036cdd..f4c00fb53b 100644
--- a/src/bonsai/bonsai/bim/module/model/mep.py
+++ b/src/bonsai/bonsai/bim/module/model/mep.py
@@ -846,8 +846,8 @@ class MEPAddTransition(bpy.types.Operator, tool.Ifc.Operator):
                 should_add_representation=False,
             )
             body = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
+            # Will implicitly remove `mesh`.
             tool.Model.replace_object_ifc_representation(body, obj, rep)
-            tool.Blender.remove_data_block(mesh)
             pset = ifcopenshell.api.run("pset.add_pset", tool.Ifc.get(), product=transition_type, name="BBIM_Fitting")
             ifcopenshell.api.run(
                 "pset.edit_pset",
@@ -1197,8 +1197,8 @@ class MEPAddBend(bpy.types.Operator, tool.Ifc.Operator):
                 should_add_representation=False,
             )
             body = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
+            # Will implicitly remove `mesh`.
             tool.Model.replace_object_ifc_representation(body, obj, rep)
-            tool.Blender.remove_data_block(mesh)
             pset = ifcopenshell.api.run("pset.add_pset", tool.Ifc.get(), product=bend_type, name="BBIM_Fitting")
             ifcopenshell.api.run(
                 "pset.edit_pset",