The domain controller you are using is running Windows 2000, and the GPO you selected contains application installation settings. ...

The domain controller you are using is running Windows 2000, and the GPO you selected contains application installation settings. These conditions might require that users reinstall some applications after the GPO is distriburted. To prevent users possibly having to reinstall some applications, restore this GPO using a domain controller running Windows Server 2003 or later. 
Do you want to use the current domain controller to restore the GPO?