I make Garmin ATV trail maps for the US and many people have tried to get them to work on the Polaris display with no luck. They have also tried downloading my original gpx tracks with no success. It will only store a very limited amount. Go to the Polaris RZR forum, it has a lot of info on the PIDD.
Go get the "Map" from this site. As Boyd said Nuvi's will not accept tracks, you can copy them onto a Nuvi but there is not Track Manager. Plenty of people including my self have put the "Map" on Nuvi's.
In my hobby everyone has gone to tablets. If Garmin does not start making their stuff easier to use and connect they are going to be out of the GPS business. Basecamp is ridiculously complex for beginners.
The map below which is hosted on this site has the Arapeen on it. It is coded for 50" & 60" trails. It is accurate per the latest MVUM map. This map also includes the Paiute and Paunsaugaunt (sp) trails. There is a legend in the middle of the Paiute trails. There are also maps available for Android Apps BackCountry Navigator and Orux. Orux will show the trail width differentiation better.
I am the maker of that map. I make the PC version and then convert it to Mac format. I do not have a Mac so I cannot test it. Hopefully someone with a Mac will chime in as to whether they are having issues. I am currently out of town. When I get back I will take a look at the file and perhaps remake it.
I updated the map at the link last night and all went well, uploaded PC and Mac versions. This morning I tried made a small change to the map and when I tried to upload them I got errors and the map files have no size and can't be downloaded.
You copy not import the WV ATV Trails 2015.bcn file into the BCNAV/Data folder.
Normally you would import a GPX file into BCN. I have already done that and spent a couple of hours converting the waypoint icons that imported in to more accurate and nicer looking ones that BCN has built in. BCN stores the GPX tracks in a database and call them Trip databases. I distribute this database file called "WV ATV Trails 2015.bcn"
IF you still have issues PM me and we can walk through it on the phone.