Have you had any issues downloading tracks to the bike? I like to plot specific routes, and when I did that, saved as a Harley GPX 1.1 file, and tried to load into the bike it gave me a Nav System Memory Full error (it's a brand new bike with nothing saved) when I tried to save as a track (trail). I ended up just loading into the bike as a route and it appears that it carried over my specified route as I had planned it. We are going to ride the route tomorrow and see how it goes, but thought I would ask if anyone had experienced a similar memory error.
To the best of my recollection, me and my "team" only had problems uploading routes to the bike if the route contained more than 64 waypoints. In spite of what HD says, it seems like 64 WP's is the maximum the infotainment system can handle. As a result of us finding out that magic number, I keep all my routes to less than that by a margin. Try using 55 WP's or less in your routes.
As far as I know, our bikes will not view a Track route. It has to be a waypoint route. The infotainment system doesn't seem to know what to do with Tracks, much less to be able to use them. In MyRouteApp and Tyre (it's brother program), Tracks and Routes are two different things entirely. A route saved as either a GPX 1.0 or 1.1 route will contain both files, although you won't see the Track file on your computer or on the SD or USB card. You will only see it after it is uploaded to your Infotainment system. It will show as your original file name, but it will add the characters "._" at the beginning of the file name. If you try to load that route, it will not take and may lock your system up.
MRA created the save as an "HD route" option for us that does not contain Track information, thus the saved file will contain 90% less (and needless) information. Your memory should not be full unless there are other files on there that you don't know about. There is a procedure for deleting those old GPX files if you find some on there.
You may also have tried to import the wrong thing? Make sure you follow the instructions they posted in this thread:
https://myrouteapp.freshdesk.com/support/solutions/articles/12000031620-transferring-routes-to-the-harley-davidson-boomboxAlso, take note of the picture below. Don't ever click on the "Select All" option. Always click ONLY on the option below it with the two flags and the finish line flag, and don't select anything else. It should work just fine then.
If it doesn't, reply back and we'll try to help more.