Mtl override - preserve doesn't consider multi/sub-object

Really like the new preserve feature of material override but it doesn’t consider materials in a multi/sub-object setup.

For instance I have a multi/sub with all window/glazing materials and a window modelled with a sweep with materials assigned by section ID, and this does not work.

Hope that makes sense.
Thanks
J

Definitely makes sense, already reported in our internal tracker.
id=251251592