Converting imported revit light emitter

[Jens]

So I've imported a huge fbx, the lights came in as a "Free Rectangle". With some testing in regards to intensity and making the shadows to CoronaShadows, it works okay. But I miss the corona light controls, so I tried to convert the lights. The converter runs and in listener window it says: "Attempted to convert 313 lights. Conversion finished.". But they were not converted.

Is this a bug or just how it is? max 2024, corona 12 hotfix 1.

Any other way to do this? Ideally I'd like to avoid having to use a script that replaces an instance with something else etc as there are so many lights and they are already nicely instanced for different areas in the model.