diff --git a/src/bonsai/bonsai/tool/loader.py b/src/bonsai/bonsai/tool/loader.py
index b558d75be5..bd699c4d5d 100644
--- a/src/bonsai/bonsai/tool/loader.py
+++ b/src/bonsai/bonsai/tool/loader.py
@@ -936,8 +936,7 @@ class Loader(bonsai.core.tool.Loader):
             # ios_edges holds true edges that aren't triangulated.
             #
             # we do `.tolist()` because Blender can't assign `np.int32` to it's custom attributes
-            ios_edges = list(set(tuple(e) for e in ifcopenshell.util.shape.get_edges(geometry).tolist()))
-            mesh["ios_edges"] = ios_edges
+            mesh["ios_edges"] = list(set(tuple(e) for e in ifcopenshell.util.shape.get_edges(geometry).tolist()))
             ios_item_ids = ifcopenshell.util.shape.get_faces_representation_item_ids(geometry).tolist()
             mesh["ios_item_ids"] = ios_item_ids
 
@@ -981,11 +980,6 @@ class Loader(bonsai.core.tool.Loader):
                 if rep.is_a("IfcShapeRepresentation"):
                     tool.Loader.load_indexed_colour_map(rep, mesh)
 
-            ios_edges_values = [
-                (e.vertices[0], e.vertices[1]) in ios_edges or (e.vertices[1], e.vertices[0]) in ios_edges
-                for e in mesh.edges
-            ]
-            tool.Blender.Attribute.fill_attribute(mesh, "ios_edges", "EDGE", "BOOLEAN", ios_edges_values)
             tool.Blender.Attribute.fill_attribute(mesh, "ios_item_ids", "FACE", "INT", ios_item_ids)
             tool.Blender.Attribute.fill_attribute(mesh, "ios_material_ids", "FACE", "INT", geometry.material_ids)
         else: