During the migration, we may be incorrectly configured, so a large number of configurations need to be deleted. And after a migration, If services are abnormal, we need to roll back the device to the status before the migration.
In this case, We can use the display configuration commit changes command displays the configuration change recorded at a configuration rollback point.
Or using the display configuration commit list command displays the configuration rollback points that are generated in the system.
Then using the rollback configuration command to roll the system configuration back to a preceding configuration. This can save a lot of time
However, I find that only CE switches and NE routers support those commands. I hope that other models can also support them in the new versions.
Hope this can help you!