I have a customer that wants to migrate their users primary mailboxes from Exchange 2016 to Office 365-Exchange Online but leave their archive mailboxes on-prem.
I haven't been able to decipher what little I've found on this topic into a clear answer. Anyone know for certain whether this is a supported scenario?
To be clear this customer has not yet migrated, when they do they will be syncing AD and in a Hybrid relationship.
Thanks in advance for help!!!