Troubleshooting & messages · Undo, move back and Recycle Vault
Why won't Storage Studio move something back when something else is already at its original place?
Short answer: Something other than Storage Studio's shortcut now sits in the original place, and moving back would overwrite it — so nothing changed. Remove the unwanted copy, then try again.
When it moved the item, Storage Studio left its own shortcut in the original place. Now there's something different there — a real file, folder or app that isn't Storage Studio's shortcut. Putting the item back would overwrite it, so Storage Studio refuses and changes nothing.
Check what's there now. If it's an unwanted copy (for example, an app you reinstalled), move it to the Trash, then try moving the item back again.