Delta Drive, Delta Trust & My Drive · Delta Drive on your Mac
How do I clear Delta Drive's copies from my Mac?
Short answer: Use the gear menu's Delete downloaded copies from this Mac in Delta Drive. It removes the copies kept on your Mac without deleting anything from the drive; files come back when you open them.
Open the gear menu in the Delta Drive window and choose Delete downloaded copies from this Mac. It clears the copies kept on your Mac immediately without touching anything in the drive itself — everything is still there and comes back when you open it. A file that's open in its app is left alone.
To stop copies building up again, switch the drive to Online only, or shorten how long Keep a copy while I'm using it keeps files.