@TimothyH and anyone else:

You should export TCX not GPX files from Ride With GPS ("RwGPS").

GPX files don't support course points, so RwGPS uses waypoints to mark where you need to turn. Waypoints exist outside of the course or route you're doing. Using a GPX file will clutter your map with a bunch of "left" and "right" markers, they stick around after you finish that particular ride, they're there until you delete them.

TCX files support course points, so you get turn-by-turn (you get that either way) but the next time you're on that road for some other reason, the old points aren't there to confuse you.

This is a major pain in my butt because my watch (Garmin Fenix 3) only supports importing GPX and FIT files, which means I have to run ancient software to translate TCX to FIT files. Edges can parse TCX files directly, so I've heard.