Unfreezing Track changes compressor Input?

This has now happened often enough for me to wonder and post...
 
It seems to happen when a track has been frozen for a long time...?
 
I unfreeze the track (in this case, multi output AD2) and suddenly I can't hear the snare?
Investigation shows my compressor (pc76) has the input all the way down (low) instead of the 2.7 it was previously set at.
 
I don't understand what is going on...
 
Related:
 
The Input to the OH track (CbB) has changed from the stereo input to the left???
 
Something strange is happening. this is not the first time I've experienced this...
 
Anyone else seeing anything along these lines?
 

pwalpwal
same issue as earlier? freeze/unfreeze changes the level, rather than something to do with the compressor

Did I repost this? Sorry if I did... but this is not the level change I posted earlier today. That is a simple volume change though no controls are different....
 
In this scenario, the knob for the compressor's input level is drastically changed...