After all your data are migrated successfully, you may want to delete all data in your Source Store. However, we highly recommend not to delete any entities in your Source Store after the full migration. When the migration process completes, your Source Store still operates and continues getting new data. You surely need to update these new data, therefore, you should keep your Source Store to use LitExtension Recent Data Migration service to avoid starting over again.
Besides, after your Target Store is ready to go live, you still should keep a Source Store data backup after delete it.
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