I would suspect so, since they apparently haven't changed the mugs. My guess is that the system is configurable, which is how they've gone from mugs that are only usable at one resort to mugs that are usable at any resort. It wouldn't make financial sense to have a system that required you to change chips or technology every time you wanted to make a change to the program.
This is just my personal guess, I really haven't seen a lot of discussion about this change. If anyone's got more information, post it here!