Follow the steps below to delete a line group:
From the navigation tree, click Offline Configuration > Edit Offline Configuration. The Offline Configuration navigation tree opens.
When prompted to Duplicate Active Configuration, click Yes.
In the navigation tree, click Line Groups, select the line group to delete, and then click Delete.
A confirmation message appears. Click OK to delete the line group.
The line group is now deleted and disappears from the list shown in the Offline configuration.
In the navigation tree, select Commit Changes and Exit. Confirm the Commit. Your changes are now saved to the duplicate (inactive) configuration. Configuration changes will not take effect until you have activated the inactive configuration.