If you are using native why not use the cr2 then use pz2 to apply textures or do it manually. I recommend pz2 mats then tweak. You will probably want to tweak them manually anyway. Save a base file for future use. Make sure your lighting is correct and there are 2 places for light thru transparency. If you use any GI option get the second place. Other than that if your alpha maps don't come in...this often happens, then you can get this look.

No need to think outside the box....
    Just make it invisible.