How to switch DNS for migrated Plesk subscriptions?
How to update NS records for all migrated domains on the new server?
Warning: To switch DNS, the subscription should be migrated without errors (have green or yellow icon next to the subscription name). Otherwise, the following message will be shown: This operation cannot be applied to all selected subscriptions
Log in to Plesk
Go to Tools & Settings > Migration & Transfer Manager
Choose the appropriate migration session.
Click on tab List of subscriptions
Click Switch to advanced mode
Select the migrated subscription and press Switch DNS.
Additional information is available in this documentation section.