920xt recorded time of open water swim, but didn't track the distance

Hi there,

Just started using my 920 and went for an ocean swim yesterday.

I hit start at the beginning and the timer counted the entire swim. However, no data was recorded for distance. I finished the swim and it just said 0m.

After the swim I recorded a 100m walk to see if that would be tracked, and it was.

Is there any way to retrieve the swim data at all? Or is it lost forever?

Is there a setting I may have missed?

Thanks,
Dan.