Since when was CAPS an archival format? I thought CAPS was merely the replacement for ink and paint cels, the finished image being output to film the same way cels once were. I can't even imagine there were hard drives big enough to store the entirety of BATB and Aladdin in their finished form in early 90's.
I could have sworn I read an article someplace around the time the IMAX reissues began, that mentioned the difficulties just resurrecting those original animation files.