There are some useful articles:

https://accountants.intuit.com/support/en-us/help-article/back-data/use-proseries-local-backup-tool/...

https://accountants.intuit.com/support/en-us/help-article/back-data/copy-back-client-files-using-pro...

The reason a program like this is installed, not copied or cloned, has to do with the types of file access and entitlement (license) confirmation processes. Installation also allows for updates to function.

This doesn't prevent them from copying over or cloning other work. You have to be selective and protect your work, always. I've never seen a problem when the program is newly installed (clean install).