Troubleshooting & messages · Undo, move back and Recycle Vault
What does "Storage Studio lost the record of this move" mean?
Short answer: The record that lets Storage Studio undo this move is missing, so it can't roll back automatically. Nothing was deleted — find the files on your drive and copy them back by hand.
Storage Studio keeps a record of every move so it can undo it later. For this item that record is missing — so it can't roll it back automatically. Nothing was deleted.
The files are still wherever the move left them (usually on your drive, with a shortcut in the original place). Check What's Using Space or open the drive in Finder to find them; you can copy them back by hand if you need to.