I eventually discovered my old notes deep in a hidden folder. I can't remember the location, but I think it was somewhere under ~/.local Copying the notes over to the .gnote folder brought them back.
** Changed in: gnote (Ubuntu) Status: New => Invalid -- Gnote data loss: some of my notes are missing https://bugs.launchpad.net/bugs/578158 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs