Thanks @derekflood for the clarification. I notice @toto12345 mentioned in an earlier message that it requires a mltx file to be referenced - missed that.
So that all works now for single textures. But our next hurdle is UDIM support - there appears to be an issue with the translator not liking it. I found this thread that suggested it wasn’t supported as of last March
@UE_FlavienP - I don’t suppose you have any update on when it might be supported or existing workarounds?
Thanks!