Forum Discussion
Google to O365 Migration Batch
I migrated our email from Google to O365. One of the batches says they all failed, but the emails did transfer over. If I delete the batch, will it remove the emails that already migrated or cause any other issues? I get an email every 15 minutes with the error for the batch, so I'd like to just delete it if it wont hurt anything. The boxes are working fine, and history migrated already with no reported data loss. The error is a forwarding thing that seems unresolvable. For additional context I used the automated tool.
2 Replies
what error you getting? have you check with error.
Hi jls818
Short Answer:
No, deleting the migration batch will not remove already migrated emails. It only stops the migration process and the associated sync/error notifications.
Why It's Safe:
Migration batches in Office 365 (Exchange Online) do not store or own the migrated emails — they only facilitate the sync process.
Once data has been transferred to the mailbox, it remains there even if the batch is deleted.
If you've confirmed:
Emails are present
No user details missing
Mailboxes are working normally
The error is non-impacting (e.g., forwarding configuration issue)
Then there's no risk in deleting the batch.
About Those Error Emails
You’re receiving those every 15 minutes because the batch is still marked as “active” or retrying. Deleting it will stop those alerts.
One Caveat:
If you were using the batch to sync new mail during the cutover phase (aka staged or hybrid migration), then deleting it will stop syncing new incoming messages from Gmail.
Since you said:
The boxes are working fine, and history migrated already with no reported data loss.
It sounds like your cutover is complete and you’re no longer syncing Gmail — in which case, you’re good to proceed.
Action Plan:
Go to Exchange Admin Center → Recipients → Migration
Select the failed batch
Click Delete
Confirm deletion
