S70 distance measurement in the event of non-detected chip shots.

Using the S70 Shot Tracking feature (manually, no CT10's) if I track my approach to the green and it comes up short, I then chip to the hole but the chip isn't detected. How do I stop the measurement of my approach to where it actually landed? I thought it was by tapping the distance reading at the top of the watch, but doing this it goes back to Hole number then as soon as I start walking it continues with the approach yardage count, obviously leading to skewed club yardage figures. Hoping someone can help?