User Interface X and Halo 2.5

i use UIX and of course have Halo 2. i've made a copy of halo and inserted a bunch of modded maps i got from halomods.com. i used avalaunch to rename the default.xbe name from "Halo 2" to "Halo 2.5" so i can know the difference in my Games folder.
however, UIX will not recognize Halo 2.5 while all my other dashboards will.
is there some sort of "auto-add items in f drive" option i have to have selected? i have to go into the file manager every time i want to play a modded Halo game. has anyone else tried this and had the same problems?