Since I use two tiu's in the super mode and only one aiu, I assume I won't be impacted by the bug?
When we were beta testing, I did a recording with switch tracks on TIU #1, AIU #1 and TIU #2, AIU #1. On playback, only the switch track on TIU #1, AIU #1 played back.
While I know for a fact that only the first switch track was actually recorded (MTH confirmed this), what I don't know is if a recording that was made with a remote and that had both switch tracks, would have played back both.
If your single AIU is on TIU #1 and you select TIU #1 for the session, all should work well. However, if your AIU is on TIU #2 and you select TIU #1 for the session, you most likely wouldn't have either switch track work at all on playback.