No roughness or metallic map when doing a merge materials for unity 3d export
When I export a clothed character for unity 3d I go to the L.OD side and choose merge material either by all item or type. In the end all 3 exports miss a roughness and metallic map export And show only an albedo merged and normal merged in the folder with character. Is there anyway to get a merged roughness and metallic map using the unity 3d export or is this normal behavior?