garmin 705 problem

bobhitch
bobhitch Posts: 87
edited September 2011 in Training, fitness and health
Morning all,
of late when i plug my 705 into the apple mac and it downloads the history some random days seem not to appear . So , for example, i did a week riding in the alps in july but although i can access the history on the device it doesn't appear on the garmin training centre, there are other random days that are on the device but don't appear on the training centre --any ideas??

cheers Bob