additional tweak to the preceding commit.

src/bonsai/bonsai/bim/export_ifc.py

@@ -36,6 +36,7 @@ from bonsai.bim.ifc import IfcStore
 from mathutils import Vector
 from typing import Union
 from logging import Logger
+from math import radians
 
 
 class IfcExporter:
@@ -112,6 +113,7 @@ class IfcExporter:
                 # Ensure reflected ceiling cameras have the correct scale
                 if obj.scale != (-1, -1, -1):
                     obj.scale = (-1, -1, -1)
+                    obj.rotation_euler = (0.0, 0.0, radians(180))
             # Skip all other scale handling for cameras
         elif tool.Geometry.is_scaled(obj):
             bpy.ops.bim.update_representation(obj=obj.name)

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

@@ -2346,12 +2346,14 @@ class ActivateDrawingBase(tool.Ifc.Operator):
             is_reflected = ifcopenshell.util.element.get_pset(camera_element, "EPset_Drawing", "TargetView") == "REFLECTED_PLAN_VIEW"
             if is_reflected and camera.scale != (-1, -1, -1):
                 camera.scale = (-1, -1, -1)
+                camera.rotation_euler = (0.0, 0.0, radians(180))
 
         if camera_props.update_representation(camera.matrix_world):
             bpy.ops.bim.update_representation(obj=camera.name, ifc_representation_class="")
             # Restore the scale after update if needed
             if is_reflected:
                 camera.scale = (-1, -1, -1)
+                camera.rotation_euler = (0.0, 0.0, radians(180))
 
         return {"FINISHED"}