Migrating mailboxes from or to a Multi-Geo tenant setup using Power365
The following steps should be taken when migrating mailboxes from or to a Multi-Geo O365 tenant because of the data residence requirement:
1. Mailboxes from Satellite Tenant should be moved to the Home Tenant first or to the same location where the Binary Tree PowerShell service accounts are located.
2. Migrate the mailboxes using Power365.
3. Once the migration is completed, move the mailboxes to their original Satellite Tenant again via O365.