Unlike Copy, this action completely overwrites policy objects in the second GPO, including software and IP securities. The Import feature uses a backup folder as the source of the policy objects, rather than using the GPA tree. In other words, the GPO from which you are copying information must be backed up before you import the information to another GPO.
To import GPO settings:
Select the GPO into which you are going to import.
On the Action menu, click Import.
Follow the Import Group Policy Object wizard until you have completed importing the GPO settings.