I didn't try to download direct from rwgps though I think it's possible. I was more interested in getting a system working between my computer and the Bolt, largely to try and get away from the third party (ie rwgps).
On a different note, part way through my morning ride, I thought I'd see what happened if I turned on the stored route for the ride. As you'd expect, after a bit of sniffing about, it picked up my place in the route and the rest ran normally.