Rant: 3Dcoat introduces more problems than actually support texture workflow.
Question:
When a complete image is imported as a Color (or imported as a texture in general) the rest of the Texture that is outside of the UV islands is discarded and replaced with a solid GREY color that inevitably bleeds into the seams of UV islands, WHY!?
WHY does 3DCOAT -- regardless of version -- remove the rest of the texture?
Reproduction:
1. Import UV model for pixel painting
2. Import a Picture to serve as a Color Layer.
3. Result - the Picture outside of the UVs are discarded, destroying any form of continuity.
4. 3Dcoat generated problem - a solid GREY color bleeds on to UV islands.