Thanks for the replies. I don't use a power meter so I think I'll just use the auto-pause. It was a clear dry day so maybe it was just one of those things. I actually stopped at a ridge line and walked my bike up a dirt road to an overlook and then stopped the ride. Looks like when a restarted the ride something weird happened. I was just concerned because this was just the second time I used the 520. The sad thing is I did quite a bit of climbing on this ride and only got credit for the first few hills.