polygon selection to udim in c4D

[René van Gageldonk]

is there a way to convert a polygon selection tag to udim in c4D?

let me clarify: I’ve exported .obj+4texture.jpgs from metashape (in udimformat). when I import this in c4D I get the object with 4 textures and 4 polygon selection tags. When I open the same obj with tex in substance painter I get object with 4 texture sets. And I don’t want that. The reason is because is has 4 textures. So I’m trying to convert in via C4D (with Arnold) to real udims that can be opened in Painter with 1 textureset with 4 udims. It is all very hazy to me. who can help?

[René van Gageldonk]

never mind, I found the solution to my problem.

The combination metashape / substance painter doesn’t work as far as I can tell. My solution lies in using c4d in between and converting the obj with udims in c4d with arnold. export the new obj and it works in substance painter with only 1 texture set.