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Looking for a way, as admin to a shared folder which contains sub-folders, to keep other team members from accidentally moving those sub-folders. Part of it is education: novices do not grasp that by...
Susan,
You definitely WOULD NOT lose anything. In fact, that's the beauty of Dropbox. You could either lock the folder so that your cousin could only save a separate copy of the folder contents, and you'd always have the option of easily recovering data that has been removed using Dropbox online.
This comment is specific to people moving things around within a complex folder structure set up for an organization with many users.