Duplicate files · Removing and restoring duplicates
How do I restore a duplicate I removed by mistake?
Short answer: Open More menu ••• → Recycle Vault, select the file and click Restore (or Restore to…), or use Undo last removal to bring back a whole clean-up. If no drive was set up, the copy is in your Mac's Trash — use Put Back.
Open the More menu ••• → Recycle Vault. It lists everything Storage Studio has removed, newest first. Select the file (or several) and click Restore to put it back where it came from, or Restore to… to choose a folder. Undo last removal brings back everything from the most recent removal in one step — handy after Clean all.
If no external drive was set up when you removed it, the copy went to your Mac's Trash: open the Trash in the Dock, select it and choose Put Back.
If something with the same name is already in the original folder, the restored copy lands beside it — nothing is overwritten.