LINKPlanner: Why are PTP 820G extras shown for a PTP 820S link?

When planning a PTP 820S link, when one hits the "New Extra" button under "Bill of Materials for Link", why do PTP 820G extras listed?

The PTP 820S, PTP 820C, and PTP 820G are all part of the same family of licensed microwave products.

Be careful when you select that "PTP 820 16E1 cable MDR68-RJ45 3M,LA,cross" extra for your PTP 820S or PTP 820C link. You probably don't need it.