Garmin Base Camp with Europe maps

Thank you all for your advice. In the end what I plan to do is the simplest. Plan my route 1 to the German/French border, then plan route 2 from the border to my French destination. When I cross the border I stop route 1 and switch to route 2. Not elegant but it works.

That'll certainly work

The real point is that only being able to only access one map at a time in BaseCamp does not prevent the creation of a single route.  A Direct route that is converted to a different Profile with the Global map should work on the device.

As another example, a motorcyclist might download a track with a very indirect route on minor roads.  Here it would be easier to divide the track, convert each to a direct route, limiting the number of points.  Each route can be checked and altered if needed using the desired profile before joining the direct routes.

As for the OP, the kml file indicates where the crossing occurs.

But I agree that creating a route on the device can be the quickest method in lot of cases.  But there are also times when using BaseCamp will be the best choice.  In that case, the imperfect device route should give a good indication of where to cross the border.

As an aside, routes that are imported into BaseCamp are not recalculated until a change occurs. I assume this is also true for routes downloaded from a device. Changing maps won't trigger a reacalculation either.