Losing Audio Clips Randomly

At first I thought maybe this was because of my own errors, and I can't explain how this is happening, but I'm losing Take Lane audio. Audio clips have simply disappeared in more than one Session. Not all audio clips in a track's Take Lanes would disappear, but other s are definitely coming up missing. 

I can re-import the audio into the Take Lanes as before, but unfortunately, I'm now having to manually sync them up, which is changing the tonality of guitar tracks. 

I'm also seeing issues with whole sections of a song being deleted from a saved session. I can easily recover from the missing sections, since the editing is non-destructive, but this is quite frustrating.

I wish it were easy to reproduce, but it happens so sporadic and randomly. I'm just backing up my sessions after every sitting. It's an issue with the session, but fortunately I can quickly recover from a backup, and detect the issue when first opening the session. 

Have you tried temporarily moving clips on other lanes out of the way to make sure the missing clips weren't sitting behind them?   That's an issue I've come across with take lanes on occasion.  I've never found a reproducible recipe though, it just sometimes (though not often) happens.
 

Did you Split and Delete?   If so, I think I've seen that too, when clips were hiding behind other clips and would be selected together.  Fortunately it's non-destructive.

Nah, no Splitting. Just a change after Saving and closing. Weird.

 
Definitely!