I have several training and race sessions in my 310XT. When I transfer the files into either Training Center or Garmin Connect, they all transfer except for one. I can view it on my 310XT by looking at history, but am unable to get it to upload. Attempting a manual upload to Garmin Connect, there are TCX files shown for every date except the one.
Why can I view it directly on my 310XT but unable to transfer the activity? Murphy's law is that of all the activities on my GPS, this race is the one which I am most interested in seeing.
Any ideas how to force an activity on the 310XT to upload?