ID Map is not the same as the polygroups in the model file.

[JonEnstrom]

I am importing a model from Zbrush using a single material version and then baking ID map (and other maps) with a polygrouped version.  The polygroups are crisp and clear in Zbrush but the ID map in substance is blurred and artifacted (edges bleed to other surfaces etc).  Any idea what I am doing wrong?

[puchingball]

as far as i know it's caused by ID type of coloring, in this case zbrush use vertex color for polypainting and polygrouping, so, when substance read that information bleed the color between adjacent vertex with different colors, most accurate result is Material color type for ID map, but i don´t think it can be made in zbrush, i know it can be done in maya or blender be changing color of a material assigned to the mesh or part of it.