I know where to enable auto save in the multitrack prefs, but have no clue where that data is stored, how to access it if I need to recover and if that location can be changed. Any help would be appreciated.
It's recovery data, gathered automatically and it's stored in wherever you set your temp location to. Audition decides whether you need to recover data - users don't get to choose about that. Recovery data is lost when you restart Audition after a normal shut-down; it only does recovery from crashes.
It has also recently been discovered that if you recover from a crash, that you need to re-establish where you are recording new files to - otherwise they end up in the temp recovery area, not saved properly, and you will lose everything you recorded next time you restart. The devs are attending to this, apparently!