12 Bake YOUR Textures

now go to the ID menu inside of the Baking menu. From here select the colour Source menu and scroll down the bar until you reach the Polygroup/ Submesh ID option. now you should be all set, so simply press Bake Textures. now all the textures should be located in the additional maps that you just baked. If you want to modify them in Photoshop, you need to export the textures by selecting them from the Additional maps menu.