We are planning to migrate AD forest A to AD Forest B to maintain single root domain.
Forest A : contoso.com --> Root Domain
Fabrikam.com --> Added as UPN Suffix domain (used for Email) Public Facing
In Forest B we wanted to eliminate contoso.com as root domain and wanted to make fabrikam.com as root domain.
How do we plan to migrate the user accounts, as we are getting some domain conflict errors while setting AD Trust.
Let me know if someone has a better option to this solution.
You can't remove a root domain from a forest so eliminating contoso.com from ForestA is not possible.