The company I work for uses AD authentication on their Intranet built with EPiServer 6.  All 35 000 users are in the process of being migrated to a new AD, which means a new profile is being created for them in aspnet_Users when they access the Intranet with their new AD credentials.  I am trying to modify their original account with their new account name.  I am having issues with their content edition permissions.  I think everything is set in the tblAccess table, but when I update the Name field with the new AD\username value, permissions don't seem to be transferred to the new account when the user is logged in.  Can anyone think of anything I might be missing?  Here is my current process:

1. Trigger on aspnet_Users insert checks if user is using new domain.  If so, there is a search for the same user name with a different domain.  If found, a record is added to a migration table (originalUserId, originalUserName, newUserId, newUserName).

2. A job runs every few minutes to process the migration table.

* aspnet_Users: Switch UserName/LoweredUserName values between original and new user (originalUserId record has UserName updated to newUserName, newUserId gets originalUserName)

* tblWindowsUser: Update UserName/LoweredUserName to newUserName

* tblAccess:Update Name to newUserName

* tblChangeLog: Update ChangedBy to newUserName

* tblPage: Update CreatorName to newUserName

* tblXFormData: Update UserName to newUserName

* tblWorkPage: Update ChangeByName/NewStatusByName to newUserName