Compatibility warning of map in Basecamp on route-transport to Dakota

I cannot get my route(s) transported, exept for one ( I find it back on Active Route window on the Dakota), which I also cannot remove via the Maptree, strange enough, to the Dakota: a get a warning (see title). On the Dakota I have active: OFM W3, on Basecamp: OFM Benelux.
I do find routes in de Dakota, but they are straight lines drawed.
Don’t get the picture. Do I have to use exactly the same map in Basecamp as I use in the GPS?


Yes you need exactly the same map. Even the version is important so an older update of the BNL map on the gps with a route made with a newer version on the pc can lead to routing errors.