That's just weird. Around here they say point blank that the lap cards don't really mean crap. When you hear the bell that's your last lap no matter how long you have been racing or what the counter says. They always use a different bell for primes so there is usually no mistaking it.

....that and I can't recall us ever restarting a race.

Up here they would have called it done. Hell the next race would have been a few laps in already.