If you want to migrate Zimbra to Exchange Server, you can try any professional software like KDETools Zimbra to Exchange Server migration tool. The software also migrate Zimbra to Gmail, G Suite, Google Drive and so on. You can move Zimbra file by date range, subject and other attributes.
Read More:
https://www.kdetools.com/how-to/migrate-zimbra-to-exchange-2016.html
