I am unclear as to why you would be doing so many backup and restore. 

Just to confirm, you are using the Lacerte Backup (Ctrl + B) and the Lacerte Restore (Ctrl + R). Also confirm the the PASSPORT is a USB backup device. You are working with Lacerte on a local machine and not on their online version. 

This problem is just really strange. Maybe the solution is to work with client numbers. Are you face to face or doing this remotely.