Maybe a bug - maybe just different with new FBX SDK 2020.1
When importing archmodel fbx’s into 2021.15020, I’m not getting the touchTextures Base, and the resulting import selects for textures.
Doing the same import operation in 2021.13610, I am getting expected textures.
However, there are some other fbx models that are getting touchTextures imported with the new SDK, so a bit random if textures show up or not.