That stinks; I was afraid of that. At least with Ace there may be some workaround for it. It would make for some interesting balance design if the two balanced out.
Patrick S over at the Ace site stated that Craze made a script for Ace that would balance out damage when a person or monster that has high/low resistance to multiple elements is attacked by a weapon/creature who has those elements.
http://crazescriptasylum.wordpress.com/201...emental-merger/