I’ve noticed that when I import Datasmith files from 3DS Max with instanced geometry, Datasmith will randomly(?) pick an 3DS object as the source asset. If I then re-import the file, instead of updating the old assets, I sometimes get a completely new set of source assets!
It would be really helpful if Datasmith consistently picked the source object based on alphanumeric sort. So if I have instances Object01, Object02, Object03, then “Object01” will always be the source asset and get updated with every re-import.