@Lydia Zhou - MSFT : I have some addition question .
I have an environment A (Hybrid exchange ).
I have to migrate to a New domain B which is not yet existing . I have to retain email address of domain A .
can i add domain B in Tenant A and verify domain B and add authoritative domain B in on prem ad + add the DNS sufix , re run the hybrid wizard .
questions
1: do i need to re-join the exchange server in domain B in exchange environment or do i have to deploy in domain B and one more server to form a DAG?
2:If i move all the required users to O365 and move remaining users to the exchange server in domain B .
3: At what point i need to break the hybird and rerun hybrid wizard in domain A and B