Scale changes are now auto synchronised on export.

src/blenderbim/blenderbim/bim/export_ifc.py

@@ -132,6 +132,9 @@ class IfcExporter:
     def sync_object_placement(self, obj):
         blender_matrix = np.array(obj.matrix_world)
         element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
+        if list(obj.scale) != [1., 1., 1.]:
+            bpy.ops.bim.update_representation(obj=obj.name)
+            return element
         if element.is_a("IfcGridAxis"):
             return self.sync_grid_axis_object_placement(obj, element)
         if not hasattr(element, "ObjectPlacement"):

src/blenderbim/test/bim/feature/project.feature

@@ -374,3 +374,16 @@ Scenario: Export IFC - with changed spatial container synchronised
     And an empty Blender session is started
     And I press "bim.load_project(filepath='{cwd}/test/files/export.ifc')"
     Then the object "IfcSlab/Slab" is in the collection "IfcBuildingStorey/Level 1"
+
+Scenario: Export IFC - with changed object scale synchronised
+    Given an empty IFC project
+    And I add a cube
+    And the object "Cube" is selected
+    And I set "scene.BIMRootProperties.ifc_class" to "IfcWall"
+    And I press "bim.assign_class"
+    And the object "IfcWall/Cube" is selected
+    When the object "IfcWall/Cube" is scaled to "2"
+    And I press "export_ifc.bim(filepath='{cwd}/test/files/export.ifc')"
+    And an empty Blender session is started
+    And I press "bim.load_project(filepath='{cwd}/test/files/export.ifc')"
+    Then the object "IfcWall/Cube" dimensions are "4,4,4"