[w i l l]

mxs imported from Solidworks with triangles (faces from Solidworks) assigned different materials. I merge all the same materials within the triangle groups list and it will render fine. BUT if I replace one of those materials with another from within the materials list the triangles wont update (it wont assign the new material to the triangles, or to all of the triangles).

This is a problem that has been around since 1.1.