I used "save-all" before experimenting with worldedit on some terrain. I'd like to reload from the save but can't figure out how. Can anyone help me? Hmm... after more reading... I misunderstood the "save-all" function, didn't I? EDIT by Moderator: merged posts, please use the edit button instead of double posting.
Yes , glad youre actually reading about your issues. The save-all function has nothing to do with worldedit. The save-all function simply saves the world files over the old ones. If you want to take backups, you'll need a mod or do them manually by pasting the world files in a folder called "Backups" (or whatever you want). You can try doing //undo 20 (i believe thats the maximum amount of undo's) and see if it helps. Also some mods include commands to restore a part of the world to its initial state (by reloading the chunk w/ the seed). Good luck - sorry you lost some progress