Material Not Importing Correct Via Direct Link

Balustrade importing into twinmotion from Archicad via direct link with bronze material but changes to glass material. This has happened alot. The balustrade was copied from another balustrade object which works in twinmotion but when I updated it changes the copied balustrade to glass. This seems to be a commont problem with twinmotion. Does anyone have any help with this?

Thanks!

Mitch