Hi, I found this:
Lengthy and confusing.
Direct question: How do I export my 1001, 1002 arranged UV UDIM tiles to substance painter?
I prefer to fix them in 1001, 1002, 1003 as I find it more convenient for all the general Substance painter.
But I´ve read in the url that Blender users should create different UV tiles on the UV map list. Is this really necessary?