What happens if GPS signal is lost?

Recording pauses sampling and resumes when the signal returns.

If you enter a tunnel or lose GPS for a while, MOOV keeps the session alive and continues when a good fix returns. The gap appears as a straight line on your route, and the segment across it contributes no distance if no reliable points were recorded.

Nothing is lost — you can finish the activity as usual and the statistics simply cover the parts that were recorded.