My Garmin 310XT skipped a workout when tranferring data. I can see it in my history on the device, but it does not show up under in the activities folder in windows. I have also resent all history and it still skipped the workout. I can also see something odd in my history on the device. Many workouts show up as occurring "today". For all of those that have successfully transferred, the date and time shows up correctly on the file. For other files, the date on my device is not "today", but is still incorrect. The time settings on my device look correct. I'm not sure if the skipped workout and the date issue are related.