Pieces shifting, eh? It's doing that to me now!
I spent 12 hours forging yesterday! 12 HOURS working to align my entire base structure in Impact! I log on today, all the pieces' alignment is totally off! So I access the backup copy, and everything seems okay, so I save the backup as a new file, but when I access the new file and the backup copy a second time, the pieces have shifted in the backup copy, too! And every single one of them was locked!
According to the coordinates, the yaw of every piece shifted by 1 point, and I'm not sure how this has happened.
Either way, the bigger question: how do I stop it?