yes load the image you are creating the bum with (ie the black and white bumpy version) as a texture, and work with it that way until its right...then allow poser to convert it to a bum or convert it yourself, and load it up correctlly and apply your skin texture...it looks kind of funky, but it does allow you to see that everything lines up properlly without having to restart poser...the other option is saving it under a new name each time you change it (very time consuming)...