You can try our software Zimbra to Exchange Server Converter tool to migrate Zimbra to Exchange Server. Some basic features are:
• This commercial software easily migrate Zimbra to Exchange Server account and different file formats such as PST, MBOX, EML, EMLX, HTML, PDF, etc.
• This tool also directly migrate Zimbra TGZ file to Gmail, G Suite, and Google Drive etc.
Read more: https://www.kdetools.com/zimbra/exchange/