How do I update a 3D model that has already been exported to LumenRT?
The solution below is described for SketchUp but it is the same workflow for any application used to Export to LumenRT.
The correct workflow is:
1. Export your model from SketchUp to LumenRT
2. Create all your wonderful nature around it and even change material on the model
3. Re-export from SketchUp and all your changes in the LumenRT scene model are preserved including any new materials you added to the model inside LumenRT.
You can re-export as many times as you like. Remember, LumenRT needs the same SketchUp file name. If you have renamed the SketchUp file, LumenRT will consider it's a new scene
See video below