[HELP] Loading a new file does not scan audio on the new file?

[Mapsking]

Not sure if it helps or not, but I did another movie, Toy Story 3, also with a commentary subtitle track.  I'm really not sure how it could possibly be related, maybe coincidental, maybe there is actually something causing it, but the commentary subtitles got deleted again.  Nothing else got deleted, no external audio tracks, no chapter file, nothing, except the commentary audio track.  Unfortunately, I have deleted other temp. files, and do not have a log, but just wanted to mention it.