This Remote Access documentation indicates how to perform a backup :

However Remote Access can't backup the windows users and groups you have created.

TSplus will only backup Web Credentials and application assignment.

To migrate Windows accounts, we recommend using a tool like CopyRight2.

Web Credentials are backed up, and the information is located in these hidden files: webcredentials.ini and webcredentials1.ini.

Published Applications and Assignments are also backed up, and the information is located in this file: Appcontrol.ini.

Before applying the restore, you may need to modify the AppControl.ini file.

If the server has a different name, it will be necessary to modify the assignment of the accounts <name-old-server-server> / ACCOUNT by <name-new-server> / ACCOUNT at the level of each of the deployed applications.

A "Search / Replace" can do this quickly!