I can "Delete private keys only, make watching-only," without entering in password for that wallet. Selecting the option to print a paper backup does not function, and makes the "Delete" button nonfunctional.
Restoring a watch only wallet via paper backup just temporarily removes the wallet from the UI. Closing and reopening brings it back as a watch only wallet once again. Watch only wallet has to be deleted for restoration of that wallet with a paper backup.
Please request details if that would be helpful.