Data Migration for a particular label
To speed up a migration with the data migration service, you can exclude some data from your source account.
Before you begin Data Migration,
- Open and sign in to their Source Gmail account.
- At the top, click Settings > See all settings.
- At the top, click Labels.
- Next to the label for the data that they want to exclude, uncheck the Show in IMAP box.
Start the Data Migration in the Google Admin Console,
- In the Admin console, go to Main menu > Account > Data migration.
- Click Set Data Migration Up.
- For Migration Source, select Google Workspace.
- Click Start.
- For Migration Start Date, accept the option that appears or choose a start date for your migration.
- Under Migration Options, check the Exclude the following folders from the migration box.
- Under the box, in a comma-separated list, add the labels that you want to exclude.
Example: Inbox,Starred,Snoozed,Draft,Important,Scheduled,All Mail,Spam,Label1
- Click Select Users.
- Then click Add user and enter the Source email, Password, and Google Workspace Email.
- After Entering the details, click on Start to start the migration process.
Please refer to the below Google support articles for further reference,
Migrate email with the data migration service - Google Workspace Admin Help
Exclude data that doesn't need to be migrated - Google Workspace Admin Help