Hello there, Deb in Texas.

You can create a backup copy in your QuickBooks Online Advanced company file and can only restore it in QuickBooks Desktop. We're unable to restore it to another QuickBooks Online Advanced account. You'll want to create a backup in QuickBooks Online Advanced first and restore it to QuickBooks Desktop. From QBDT, import it to QuickBooks Online.

Let me know if you have other questions. Take care!