After you successfully migrate data, move any newly added or updated email messages to your target account. You can transfer the new content by running a delta migration.
What is a delta migration?
During a delta migration, the new data migration service migrates newly added email messages to your target account. It also identifies changes to previously migrated email messages, such as the message's read status or new labels, and updates the message on the target account.
A delta migration skips over objects that have already been successfully migrated and haven't been updated on the source account. These items are marked as skipped.
Start a delta migration in your target account
You must be signed in as a super administrator for this task.
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Sign in to your Google Admin console.
Sign in using an account with super administrator privileges (does not end in @gmail.com).
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In the Admin console, go to Menu
Data
Data import & export
- At the top, click Go to the new data migration service.
- Click Run delta migration.
