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Unify UV and packing commands generate BUGS


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3DCoat is insanely better that anything else when it comes to UVs (Substance Painter is pretty good too). but BE CAREFUL : 3DCoat UV Packing commands generates serious bugs. Check the results and save in different folders to preserve your original baked normal maps and textures.

- When I import a mesh with instances/copies that share exactly the same UV space, sometimes 3DCoat badword up the UVs when regrouping UV sets into one single UV Set.

- Moving UVs from a UV set to another I had lots of damaged normal maps : big chunks of the normal map texture that simply disappear.

- I just noticed another damn annoying bug on the mesh I'm working on : I regrouped and packed multiple UV Sets into one (using commands "Move selected faces to another UV-Set" ; "Unify UV" ; "Pack  UV" and "pack UV2") And now some of my meshes normals are correct but some others are inverted (what should seem to be curved is now bumped). So my normals are all regrouped in one file but half of it is fucked.

I don't know Substance Painter well enough and still prefer 3DCoat, but it seems their non-destructive approach of materials editing is more efficient...

Damn it's gonna take me forever to fix that again...

You'll see here that parts that obviously need to be curved are now bumped...

https://sketchfab.com/models/1fa823b853ae43319be48fb9b2fa7139/

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