A reminder about the recall buffer:
I spent a long time tweaking parameters to get insertion effects "perfect" in order to accomplish a goal. I copied this to 8 different parts to replicate and edited each of these 8 Parts to tweak on a part-by-part basis.
Then I inadvertently pressed [CATEGORY SEARCH] and ended up in a different Performance.
Poof! and that sinking feeling.
However, I recalled something about a "Recall buffer" and searched the docs for it. I found mention but not a lot of docs of what to do.
The end of this story is that I was able to get my work back. Here's what I did:
From CFX Studio (or whatever the Performance was switched to - which was not my original editing/heavy-work Performance). I pressed the Performance Name on the touchscreen. One of the choices is "Recall". I pressed that and - poof again - my work was back unscathed.
So if this happens to you, don't throw your keyboard out the window. Use recall.