So, great news, seems BitTitan still works amazing at migrations. Completed successfully.
We split a sub company to its own tenant space in Microsoft. They are working great now. The problem is, we remove the email accounts from the old tenant space and those who were not moved can’t email those email addresses. Microsoft still hasn’t responded on this, so hoping someone else has had this issue before.
You can explore the manual method for mailbox and OneDrive method but it requires additional cross tenant user data migration license. The complete guide is posted on CloudBik’s official blog. Also, you can choose CloudBik’s tenant to tenant migration services or solutions for all data types like Microsoft Teams, SharePoint, OneDrive and Mailbox.