We have simple scenario:
on-premises Active Directory in domain A and AD Connect server that synchronizes users to Azure AD tenant.
We have a situation where we need to migrate our users from Active Directory in domain A to different server and Active Directory in domain B (separate infrastructures) , but the AD tenant stays the same.
My idea was to:
Migrate users between Active directories with passwords and attributes ADMT (Active Directory Migration Tool version).
Install new AD Connect server in new domain B in staging mode.
Put old AD Connect server in staging mode.
Take new AD Connect server from the staging mode, let it sync.
Decommission the old AD server.
Is this scenario supported? Do i need the first step or the new AD connect server will read the passwords and attributes in the 2nd step? My goal is that users in AD tenant stays the same as we heavily rely on office.com resources, Azure AD etc.