@steve-jarrell I just looked quickly at this same area directly in OSM. If I use the "Standard" layer I can't see that this section of the road is unpaved. However, if I use the "CyclOSM" layer I can it clearly.
My guess is that Kurviger is using the unpaved road data from the CyclOSM layer to depict unpaved roads on their standard maps. I don't know whether that's possible for MRA's developers to do or not, but I think it's worth consideration.
Best regards,
Steve