RCinNC, one last thought on this. Use GPSBabel to change the trackpoints to waypoints. I hadn't used GPSBabel before but took a look at it today. Once you Export your track from BaseCamp to a gpx file on your C drive, you then post that gpx file into GPSBabel, click the waypoint button and assign a name to a file into which you want the waypoints to go, press OK. Go back into BC, select your File where you want the waypoints, then click on FILE>IMPORT. You now have all the waypoints. You can begin the data management task of deciding which ones you want to keep for a route, and then add in those campground, gas station, restaurant, and other POIs that BDR had in their downloaded file.
I filed away some instructions to myself at https://drive.google.com/open?id=1bX...EIQuBZjTm95ltM
You can take a look a those.
Ok, here's where I'm at...
I've managed to successfully turn the MABDR tracks into routes, and export them to ny Nuvi 2455 using Basecamp. I checked the routes after they were loaded, and they followed the correct path for the MABDR, so that part of the mission is accomplished. Now here's my whole new dilemma....
I also exported all the POIs from the MABDR to a file on my desktop that I named "Garmin POI". The file I exported is labeled "Selected Data from MABDR" (that's the file name assigned by Basecamp). This file contains all of the POIs (restaurants, gas stations, water crossings, etc). Now, when I load this POI file onto the Garmin using POI Loader, the loader program tells me that I've successfully loaded 533 files onto the Garmin. However, when I go to the place where the customized POIs are stored (you access it by going to "where to" on the main screen of the Garmin, then pushing the "saved" button), I get the message "no data available". I know the files are on the GPS; there is a folder named "POI" on the internal storage of the Garmin, and inside that folder is a file named "Garmin POI", which is the same given to the POI file by the POI Loader program. The file is 80.7KB in size.
The first time I tried this, it worked; I checked the first section of the MABDR, and I saw the various POIs where they were supposed to be. I only loaded a couple POIs that time. I then removed them from the Garmin using the POI Loader, because I planned on loading the entire POI file. Now, I don't know what I did that caused it to not work any more, but no matter whether I try and load a single POI or the mass file that contains all the POIs, I get the same result: "no data available". I know it's there; I can see it on my computer's file manager when I have the Garmin plugged in. Do you have any idea what's happening here?