Twinmotion plugin converts to invalid material

I’m trying to import data with the Datasmith Twinmotion Importer.

There is a difference between the old version and the new version of TM, the new version of the TM file is converted to an invalid material, and all the material slots of the mesh are assigned WorldGridMaterial, so the original material is lost.

How will you solve it?

Is this a bug because it’s a beta version?