Here's how to delete an existing service order.
From the Lynx Main Menu . . .
1. Left-click on Service.
2. A drop down menu will appear
3. Left-click on Add, Change, Delete Service Orders.
4. This will display the Add, Change or Delete Service Orders window.
5. Double-left-click on the line with the Service Order you want to delete.
6. Left-click the button.
7. A Confirm window will appear:
8. Left-click on to delete the Service Order.
9. When you're done, left-click the close button to return to the Lynx Main Menu.