Meshes are auto updated in the IFC as well when edit mode is toggled now.

src/ifcblenderexport/blenderbim/bim/handler.py

@@ -5,6 +5,36 @@ from bpy.app.handlers import persistent
 from blenderbim.bim.ifc import IfcStore
 
 
+def mode_callback(obj, data):
+    if (
+        obj.mode != "OBJECT"
+        or not obj.data
+        or not isinstance(obj.data, bpy.types.Mesh)
+        or not obj.data.BIMMeshProperties.ifc_definition_id
+        or not bpy.context.scene.BIMGeometryProperties.should_auto_update_mesh_representations
+    ):
+        return
+    representation = IfcStore.get_file().by_id(obj.data.BIMMeshProperties.ifc_definition_id)
+    if representation.RepresentationType == "Tessellation" or representation.RepresentationType == "Brep":
+        bpy.ops.bim.update_mesh_representation(obj=obj.name)
+
+
+def subscribe_to(object, data_path, callback):
+    subscribe_to = object.path_resolve(data_path, False)
+    bpy.msgbus.subscribe_rna(
+        key=subscribe_to,
+        owner=object,
+        args=(
+            object,
+            data_path,
+        ),
+        notify=callback,
+        options={
+            "PERSISTENT",
+        },
+    )
+
+
 @persistent
 def loadIfcStore(scene):
     IfcStore.file = None
@@ -31,7 +61,6 @@ def loadIfcStore(scene):
 
 @persistent
 def ensureIfcExported(scene):
-    print('ensuring')
     if IfcStore.get_file() and not bpy.context.scene.BIMProperties.ifc_file:
         # The invocation pops up a file select window.
         # This is non-blocking, therefore the Blend file is saved before we export.

src/ifcblenderexport/blenderbim/bim/ifc.py

@@ -1,5 +1,6 @@
 import bpy
 import ifcopenshell
+import blenderbim.bim.handler
 
 
 class IfcStore:
@@ -36,6 +37,7 @@ class IfcStore:
         if hasattr(element, "GlobalId"):
             IfcStore.guid_map[element.GlobalId] = obj
         obj.BIMObjectProperties.ifc_definition_id = element.id()
+        blenderbim.bim.handler.subscribe_to(obj, "mode", blenderbim.bim.handler.mode_callback)
 
     @staticmethod
     def unlink_element(element, obj=None):

src/ifcblenderexport/blenderbim/bim/module/geometry/prop.py

@@ -14,6 +14,7 @@ from bpy.props import (
 
 
 class BIMGeometryProperties(PropertyGroup):
+    should_auto_update_mesh_representations: BoolProperty(name="Should Auto Update Representations", default=True)
     # Revit workaround
     should_use_presentation_style_assignment: BoolProperty(name="Force Presentation Style Assignment", default=False)
     # RIB iTwo, DESITE BIM workaround

src/ifcblenderexport/blenderbim/bim/module/geometry/ui.py

@@ -66,8 +66,9 @@ class BIM_PT_mesh(Panel):
         layout = self.layout
         props = context.active_object.data.BIMMeshProperties
 
-        row = layout.row()
+        sprops = context.scene.BIMGeometryProperties
-        row.operator("bim.map_representation")
+        row = self.layout.row()
+        row.prop(sprops, "should_auto_update_mesh_representations")
 
         row = layout.row(align=True)
         op = row.operator("bim.switch_representation", text="Bake Voids", icon="SELECT_SUBTRACT")