Ok, a quick post as I forgot about this.
A couple of weeks ago my running data wouldn't transfer off garmin. I'd gotten part way through a transfer but an error occured and the connection failed. The watch seemed to think all data had been sent and wouldn't connect to the computer - despite me knowing that there were runs 'missing' from my Garmin connect activities.
Manual to the rescue again. Who'd have thought that manuals were actually of use?
Well you what you can do in this case is force the Forerunner to send all data to your computer:
- Touch and hold menu > select Settings > ant+Sport > Computer > Force Send > Yes. All data will be sent again.