I've tested migrating users to another forest\domain as well as their SID histroy. The process log does not show any errors. However, when I log into the new domain with their accounts the home drive is not mapping. It only maps up to the \\corp-fs2\users but if log back into the old domain it maps all the way through . The test file server has not yet been moved to the new domain which is what I thought was the purpose for migrating SID History. Thanks.