About migrated and unmigrated SharePoint sites

Unmigrated sites should continue to be archived using the redirected URL. Migrated sites should continue to be archived from the normal URL. You can also configure newly created SharePoint 2007 sites for archiving.

The following example shows the use of redirection during the gradual migration process.

Before upgrade:

After upgrade, before site is migrated:

After upgrade, when site has been migrated: