This is my post from the other thread:
This is happening to us as well. My editor has been working on one project in Premiere CC for the past week. Every time she reopens it the audio is either completely missing (flatlined) or only coming out of one channel.
Adobe CC support suggested she a) create a new sequence and copy / paste her timeline into it. (for issues with audio coming out of only one channel) and b) import her entire project into After Effects and re-export it to Premiere for the issue of audio completely flatlining. This works but loses all of her keyframes on the audio timeline and bumps the timing off as well.
Ridiculous. Does anyone have any idea in terms of what is going on here?