Newfoundland to Nova Scotia ferry crossing. Trip Planning

When planning a trip to and from Newfoundland, there are two ferry crossing routes used by Marine Atlantic. As of now when planning a trip, you can only get the route between North Sydney, NS, and Channel Port Aux Basque,NL. There is no option to select the North Sydney to Argentina,NL route for a trip. Many people cross on one ferry and drive across the province and take the other ferry back to be able to see the province and not to have to double back. Thanks for your help.