if you look on the tree to side which lists the parts of the mesh you will find a section for each part of the mesh, so in case of a jacket the sleeves and the main body for each of these is a trishape and also the texture which goes with it, i you right click on the texture name/path you will get small list at the top of which is the option choose, if you click on this you can choose the texture it uses and in this way you can get the original texture to be used instead o it appearing as a white shape. sorry i didn't really explain myself in my first post.