While testing a newer version of the Management Center you may want to use the data within your production database within a test environment.
NOTE: Please do not attempt to connect a newer Management server to your production database for testing, as the database must be upgraded for the connection to be successful. This would mean that your production Management server would be connected to a newer version of database, which is unsupported.
The best option would be to restore a full backup of your Management Center database into a test environment, a detailed guide on how to do this can be found here.
Once you have restored a full backup of your production database to another SQL server, you would then follow the DesktopNow Install and Configure Guide for the newer version you are testing with, which can be found within the DesktopNow installation media within the "Guides" folder.