I sometimes use my Montana 600 for MTB training, using HRM and the speed cadence sensor. In those cases I would like to transfer data to Garmin Connect in the same way as for my Forerunner 310 XT. I can see the list of activities in Garmin Connect when i connect the Montana, but I can't download anything. Of course I can import data as a file but that seems unnecessary complicated.
I do that all the time -- it works although I do find that ridewithgps.com works even better! Here is an example which should be accessible- http://connect.garmin.com/activity/336441983