exporting a Garmin basecamp .gpx file into an Indian Ride Command

My Indian Ride Command mapping software is unable to import a garmin produced .gpx file (e.g. basecamp).  It simply doesn't recognize it.  The same is true going the otherway, when I try to load a .gpx file generated in my Indian Ride command mapping software into basecamp.  It simply doesn't recognize it.  What gives?  I thought a .gpx file was a .gpx file was a .gpx file were all the same.  Am I doing something wrong?  Any Ideas on how to fix this or a work around?

Thanks.