Object with material ID higher than 100 will not export with the good material ID/material information.
At 101, the material ID value in .udatasmith file goes back to 0
If 2 objects with ID 1 and 101 share the same Multi material, both will have the Material of ID 1
Also ID 1 in max correspond to id 0 in .udatasmith file
In our current workflow we have a Multi Material with more than 100 ids, so it is a bit of a problem right now!
Was trying to switch materials on import in UE based on name matching…
I did submit a bug about the issus