Using a Test Environment
Before you request that a Group Policy Object (GPO) be deployed to the production environment, you should test the GPO in a lab environment. If you develop the GPO in a domain in a test forest, you can export the GPO to a file and import the file to a domain in the production forest. You can then test the GPO by linking it to an organizational unit (OU) that contains test computers and users.
You can also import a GPO from the production environment of the domain. For more information, see Import a GPO from Production.