It just happened, that i accidentaly overwrote a fair number of my images with inferior copies, because i forgot to reset the option "write to destination".
That happened, because i wanted to prepare a selection of various photos from many folders (in flat view) for dropbox presentation, which hasn't to be full size.
I hoped, that the file protocol would help me to reconstruct the changed files, but the changes were not included. So, maybe some new option would make
sense for the protocol, like "include image converting actions"? We can currently protocol all rename actions, so it would also make sense to include all resize/convert events.
Luckily i was able to reconstruct the changes with flat view & sort by size (so far), so i can fetch the original files from my backup on another computer, & get
my full size images back.