We are currently going through a forest migration due to a business
consolidation/buy-out. We've got a trust established between the two
forests and we are using ADMT to migrate users with SID history.
The problem we are seeing is that once a user has been migrated to the
new forest, they are unable to access any sites in the old forest. This
appears to be down to the way that SharePoint records user access lists.
I had hoped that a tool in the SharePoint Utility Suite would help as it
allows you to work through the access rights, fixing them up, but the
suite is dead and gone.
Has anyone else gone through a forest migration and found a solution to
this problem?