Open the GPMC.

Expand the Forest and Domain trees in the left pane, and then select Group Policy Objects under the new domain.

In the right pane, select the GPO you want to use.

Right-click the GPO and select Import Settings. The Import Settings Wizard appears.

The wizard will prompt you to back up the settings currently within the destination GPO. Click the Backup button to do so. When you are done, click Next.

Select the location where the GPO that you want to import is located. Then, click Next.

The Source GPO screen appears. All the GPOs that are stored in the location you input in step 6 are listed on this screen. You can select an individual GPO and click View Settings to refresh your memory as to the settings the GPO contains. Select the GPO you want to use, and then click Next.

The Migrating References screen may appear (if not, skip to step 13). Depending on the settings contained within the GPO, you might need to "map" entries using a migration table. You can select to copy the existing entries directly from the source (using the first bulleted option), or you can create a new migration table by clicking New. This results in the Migration Table Editor window appearing.

From the Tools menu, select "Populate from Backup," and then select the source GPO you are importing. Windows will populate the objects that need to be retranslated automatically.

In the Destination Name column, simply enter the correct name for the source property in its new location. Be sure these properties already exist within the destination location; the GPMC can't create them on the fly. Also, if some properties don't need to be changed, simply enter <Same As Source> in the Destination Name column.

You can save this migration table for use in other GPO import procedures by selecting Save from the File menu and specifying a location. This can be anywhere on your filesystem.

Close the Migration Table Editor. The Migrating References screen will reappear, and the migration table you just created will appear. Click Next to continue.

The "Completing the Import Settings Wizard" screen will appear. Confirm that your settings are correct, and then click Finish. Your settings will be imported.