Shotwell does non-destructive photo editing (it keeps the original file untouched while keeping a log of actions to generate an edited photo in a database).
However, I would like to easily backup all of my photos that I edited in Shotwell (what if that database is corrupt? what if I want to move to a different photo management program?).
Is there a way to select all modified photos and export them?
This is related to a Shotwell bug report (Launchpad, Upstream) currently in-progress, but I am looking for a way to work around that bug right now.