Multitrack Sessions and Waves GONE FROM HDD

I was doing some dubbing using a Multitrack Sessions Wednesday.  When I was done with each person, I saved all the files and sessions properly into the External Hard Drive.

However, when I went to work on the clips, everything I had done was gone. No sessions, no waves, nothing -- As if I didn't even do it.  Yet, Audition still had the Sessions in the Recent tab (just no where on the drive).

My other session later in the night is still there, as well as the sessions from the week prior, but not this batch.

Even running a Data Recovery program to deep dive on the HDD turned up nothing.... And there are no Recovery files for these sessions/waves. Again, like I didn't even do the work.

Has this ever occurred to anyone else, or has anything similar happened? Did Audition trash the files? The the HDD?