"My opponent's Digimon with <Security A. +1> attacks me and 1 card is removed from my security stack by the security check. If I use this card's [Opponent's Turn] effect to <De-Digivolve X> nocategory of your opponent's Digimon. (Trash up to X cards from the top. You can't trash past level 3 cards.) that opponent's Digimon and it loses <Security A. +1>, is the 2nd security check performed?"
No. If this card's effect causes <Security A. +1> to be lost before the 2nd security check, it isn't performed.
Mar. 28, 2024