So I'm not 100% sure if what I'm trying to get at is actually called UV islands.
I've got a object comprised of tons of meshes. Each mesh has been mapped and laid out. I want to do an automatic layout again, but keep the UVs in groups of the meshes they belong to. With the layout, I'm attempting to resize everything so the UVs are all the correct size, but I don't want everything to just be mixed together.
Replies
Rizom or Headus can do that.
https://www.rizom-lab.com/
https://www.uvlayout.com/