1 official ruling from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

"I used this card's <On Play> effect to give 1 of my opponent’s Digimon with the lowest level ""<When Attacking> Lose 2 memory."". Then, that opponent's Digimon digivolved and another Digimon became their Digimon with the lowest level. What happens to the ""<When Attacking> Lose 2 memory"" effect?"
Your opponent's target Digimon that was specified when the effect activated will continue to have the "<When Attacking> Lose 2 memory" effect until the end of your opponent's turn.
Ruled Mar 28, 2024
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