There's a bug in KotorTool which maps the value for the Upgrade Level field to the Body Variation input box instead when editing armors and robes. So you need to put the upgrade level value in that box instead for it to be saved.
For some reason, I always thought that Body Variation had something to do which texture the armor/robe was supposed to use, and thus never considered changing it. One more reason why I'm completely graphics illiterate. :D Thanks for that info.
You will need to edit each and every robe and armor uti file in the game and change their upgrade number according to the info in this tutorial (
http://www.lucasforums.com/showthread.php?t=144452) (near the bottom of the OP)
Judging from the tutorial, it means that in order to access all upgrades, the robe/armor should be set as Heavy Armor?
- Star Admiral