Multitrack Edit Audio to Video Session doesn't save work

I've used Audition regularly for work and personal projects for 10 years and am completely confused with this issue I'm having:

I started a session and imported an mp4. I am in the Edit Audio to Video workspace. The top row is video, the first track is the video's audio, and I am trying to record and add commentary on Track 3. I recorded stuff, was editing it and timing it and playing it back and everything worked just as expected. I was saving regularly and Audition was asking if I wanted to update the session file and the individual audio files I was recording on track 3. After a couple hours of work, I saved everything again and took a break. When I returned and opened the session, it looked just like it did before I started all of the recording, editing, and placing of audio on Track 3. The files I recorded were not appearing in the files pane. I imported them and dragged a couple to where I had them in relation to the video in the multitrack session. I saved the project, again it asked if I wanted to update the session and the Track 3 files that I altered, I said yes and closed it down. I immediately reopened it and everything was back to square one.

This has to be a bug, right? Am I crazy for trying to add and save audio to a Edit Audio to Video session?