Now that ECMWF is no longer available as a raw grib I was looking into using PW - Offshore App to generate the route, export as gpx and then import into Exp.
I can import ok but it only shows up as a folder of marks.  It does not show as a route too as it will if another Exp user sends be a gpx file.  I am assuming the data in the PW gpx is coded differently/lacking in details so it is only treated as waypoints or some such.
Trying to move the marks over to become a route then becomes a one at a time operation, not the end of the world, just tedious. 
Is there a way to move then entire folder over as a route?   
Then again, I just tried to do it one at a time but that does not work too well. 
They need to be moved over sorted in numerical order to prevent the route from jumping all over or have the order adjusted once moved over.
Not sure much Exp can do overcome the limitation in the PW GPX file.  I should probably pose the question to PW but the support here is so much faster/better.