However the route transfer SD to Garmin Pilot does not work smoothly all the time. About 50% of the time it requires two attempts maybe a third to share a route with Garmin Pilot that actually gets satisfactorily loaded into the 'Active' in the Garmin App. I never have to modify the SD route I only have to get back to 'Share' and press the button again and maybe again. Eventually BINGO. It might only take a couple of minutes so it is not really a problem compared to manually programming the GN430W which might take 15minutes or more, with your engine running of course so you don't flatten the battery doing manual programming.

I put this post in so as to ask for help which some pilots might have solved.