Completion of migration batch in EAC in Exchange Online
In EAC, when the migration batch has reached the state of Synced, it needs to be completed.
Note
When the batch starts, all the users to be migrated will be converted from MailUsers to Mailboxes. The Microsoft 365 or Office 365 Exchange license must be assigned only after this moment. You have 30 days to assign the license
To complete the batch in the Exchange admin center,
- Go to Migration, and select the migration batch.
- Click Complete migration batch
- In the Details pane on the right, click Confirm to begin the completion of the migration batch.
The batch status will then be Completed.
During completion, another incremental sync is run to copy any changes that have been made to the Google Workspace mailbox. Additionally, during completion, the forwarding address that routes mail from Microsoft 365 or Office 365 to Google Workspace is removed, and a forwarding address that routes mail from Google Workspace to Microsoft 365 or Office 365 is added. This ensures that any messages received by migrated users at their Google Workspace mailboxes will be sent to their new Microsoft 365 or Office 365 address. Similarly, if any user who hasn't yet been migrated receives a message at their Microsoft 365 or Office 365 address, the message gets routed to their Google Workspace mailbox.