Lately I have noticed that when I import the .gpx file generated out of Garmin Connect into Garmin Basecamp and double click the track, the elevation data are missing. I get all the horizontal movement data including the Latitude and Longitude. This is despite the fact that the summary data viewable in Garmin Connect shows the elevation gain and loss during our walk. Can somebody please show me how the elevation data can be downloaded to Basecamp i.e. what option commands are required?