I am doing a cross forest migration for DC-A to DC-Z. on DC-A there's a SharePoint 2007 and I would like migrated users on Forest -Z to access SharePoint on Forest -A.
What I have done so far is created a domain-local group called SharePoint on Forest-A and added users from Forest-Z to it. if the users in Forest Z doesn't exist in forest-A it works very well. However, if the user is migrated it won't even be added to the group. The one that'll be added is the user in Forest A instead not Z.
Why is this happening? Is there any other way to work around this issue?