So while there is no real "secret" per say, there are pieces that are imparative in this process, so here is some information not only about backing up your data but also the Lacerte file structure.  If you aren't backing up the required files it will be next to impossible to ever restore what you're backing up.

File structure: https://accountants-community.intuit.com/articles/1609322-lacerte-data-file-structure-and-extensions

Backing up Data: https://accountants-community.intuit.com/articles/1606617-backing-up-client-files-in-the-lacerte-tax...