Microsoft has made documentation available for the Active Directory Migration Tool version 3 (ADMT v3) in order to assist with the process of restructuring operating environments. The Migration Guide for ADMT v3 is designed to deliver information related to the migration of objects between Active Directory forests. The Guide additionally describes object migration between Active Directory domains in the same forest.

"As part of deploying Active Directory directory service, you might choose to restructure your environment. Before doing so, you must determine when and how you want to restructure it. Organizations with an existing domain structure running Microsoft Windows NT Server 4.0 might perform an in-place upgrade of some Windows NT 4.0 domains and restructure others. After you deploy Active Directory, you might decide to further reduce the complexity of your environment by either restructuring domains between forests or restructuring domains within a single forest," stated Microsoft.

The Migration Guide for Windows Server 2003 describes not only the restructuring of the environment, but also "object migrations and security translation as necessary, so that users can maintain access to network resources during the restructure process."