My hunch is that your Facebook photos are already in Shotwell from a previous import and that's why you're seeing this message about photos being already imported. Shotwell looks at the photo itself (and not the filename) to determine duplicates.
I have tried to reproduce what you're seeing, however I am able to successfully upload photos to Shotwell that have been downloaded from Facebook. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/958784 Title: downloaded pictures detected as duplicates To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shotwell/+bug/958784/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs