This guide is outlines the process for migrating mailboxes and service settings from one Microsoft Office 365 for enterprises tenant to another Office 365 tenant in a business-merger scenario (E and P SKUs only). If you have more than 500 users to migrate or a large amount of SharePoint data to migrate, it is highly recommended that you work with an Office 365 partner.
Continue reading here.
Until later,
Henrik Walther
Hi,
I would like to read about this process but the link does not work.
Regards
Kevin