How to Import a GPO from a File
In Advanced Group Policy Management (AGPM), if you have exported a Group Policy Object (GPO) to a CAB file, you can import the policy settings from that GPO into an existing GPO in a domain in another forest. Importing policy settings into an existing GPO replaces all policy settings within that GPO. For information about exporting GPO settings to a CAB file, see Export a GPO to a File.
A user account with the Editor or AGPM Administrator (Full Control) role or necessary permissions in Advanced Group Policy Management (AGPM) is required to complete this procedure. Review the details in "Additional considerations" in this topic.
To import policy settings into an existing GPO
In the Group Policy Management Console tree, click Change Control in the domain to which you want to import policy settings.
On the Contents tab, click the Controlled tab to display the controlled GPOs.
Check out the destination GPO to which you want to import policy settings.
Right-click the destination GPO, point to Import from, and then click File.
Follow the instructions in the Import Settings Wizard to select a GPO backup, import its policy settings to replace those in the destination GPO, and enter a comment for the audit trail of the destination GPO. By default, the destination GPO is checked in when the wizard is finished.
Additional considerations
By default, you must be an Editor or an AGPM Administrator (Full Control) to perform this procedure. Specifically, you must have List Contents, Edit Settings, and Import GPO permissions for the domain, and the GPO must be checked out by you.
Although an Editor cannot import policy settings into a new GPO during its creation, an Editor can request the creation of a new GPO and then import policy settings into it after it is created.
Additional references