I`m moving between applications in my workflow (sculpt in 3D-coat, paint in Substance Painter).
I have heard that the following is possible, though I`m unsure how exactly. I want to :
1. Import a mesh (originally sculpted in 3D-coat, but textures are generated in Substance Painter)
2. Import multiple texture sets for said mesh
(from Substance Painter: they all belong on the one mesh, but for different "parts", and therefore needs to be merged since it can`t be done that way in Substance Painter)
3. Somehow combine the textures into a single UV-tile (that can later be applied to the mesh inside of e.g. Maya).
4. Export (... the newly combined texture as a single file.)