Moving folders · Folders an app is using
What does "Move when closed" mean?
Short answer: It means an app has files in that folder open, so the move waits. The sheet names the app; you can ask it to quit (it saves first), check again, then continue. Your files don't move until you choose, and closed apps can be reopened afterwards.
It means an app is holding files in that folder open, so Storage Studio won't move it yet — moving a folder while an app writes to it isn't safe. Instead of failing with a puzzling error, it offers Move when closed and shows exactly what's in the way.
The sheet is headed by the situation ("Safari is still using this folder", or Ready to move when nothing is). From there:
- Ask it to quit / Ask all to quit — the same polite request as choosing Quit from the app's menu, so it can save first.
- Check again — re-checks after you've dealt with an app yourself.
- Continue — appears once nothing is holding the folder.
Your files stay exactly where they are until you choose. Afterwards Storage Studio offers to reopen the apps it closed.