Is there any way to update the mesh in a project while somehow preserving, or manually compensating for, "triplanar recalculations" when the overall dimensions of the mesh changes?
For example, I have a character that's already been painted on. I'm swapping out the lower half of the body with a different mesh (whether fused or multiple objects) and the lower half of the body has different dimensions - taller and wider. The intent is that I'd like to preserve the "seams" at the waist for the existing materials in triplanar mode and then paint on new markings/effects.
Problem is that any change to a mesh other than the UVs seems to A) destroy all of my brush strokes, and B) change the position & scale of triplanar mappings.
I can compensate for A by importing the exported textures from the original project, but B is a problem - the seams no longer line up. Is there any way to preserve the triplanar "mapping" when a larger mesh is swapped in, and if not, how can I do the calculations by hand using the triplanar position+scale settings?
It's worth noting that I never changed the "position" of the top half of the mesh, but Substance Painter seems to disregard that and only look at the overall scale?