14. Design the migration policy

    An Exchange Online migration policy allows you to configure the migration scope of objects, conflict resolutions, user mappings, and advanced options for Exchange Online migrations. Refer to   for details.

    There are some notes that need your attention:

    - If the source or destination mailbox is a Microsoft 365 Group mailbox or archive mailbox, the Auto-Complete Lists cannot be migrated. - If you select to migrate **Recoverable Items folders**, only the Deletions folders are supported to be migrated. - To migrate archive mailboxes, make sure the archive mailboxes exist in the destination. - Synchronize deletion is unavailable for folder level migration jobs.