When digivolving with this card's [When Attacking] effect, paying the digivolution cost moves the memory gauge to 1 or more on my opponent’s side. What happens to the attack?
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Official Ruling
The attack continues, but the turn doesn't switch over yet. If the memory gauge is still at 1 or more on your opponent’s side after the attack has ended and all effects triggered by it have been activated, only then does the turn end.