I just had the same problem, after editing a save file and reloading the game all of my saves are gone not just the one I edited. My only option is to start a new game.
Note: The editor has been working great up to this morning.
Ariakas
I need your savegames to see what went wrong. Because I've created a new savegame today, I've edited it and it's working.
They have changed something as I cannot load my "old" savegames, that's what WL2 says to me but it's not related to the editor.