We want to delete one of our mailbox databases but before doing that, all mailboxes need to be moved/migrated to a different database. One of these mailboxes is a Public Folder mailbox and it also happens to be the Primary Hierarchy.
I read somewhere that without the Primary Hierarchy, all secondary PF mailboxes will not be accessible and something happening to the primary could be disastrous.
Since the primary hierarchy is unique is it still okay to migrate it to a different database and will the migration cause any downtime for other PF mailboxes?