Question about the operation of deleting the protection subnet

Dear friend！

Delete from the NM: Deletes the relationship between the protection subnet and logical systems at the NE side, to allow U2000 to delete fibers, re-upload NEs data, and so on. This command is not delivered to the NE and does not affect the services. The deleted protection subnet can be located by using the search feature. The U2000 locates it according to the NE layer protection information.

Delete from the NE: Deletes the protection subnet, logical systems at the NE side, and all traffic in the protection subnet. The deleted protection subnet cannot be restored without being created again.

Delete All from the NM: Deletes data other than fibers at the network layer. This command is not delivered to the NE and does not affect the services. After the deletion, you can search out trails and protection subnets again by using the search feature. It is recommended that you do not select this option, because a large amount of data will be deleted.

Thank you！