I'm playing a flush 5 deck with 3 different flavors of card and using blueprint + brainstorm + DNA to copy cards. I copied a card (three times) on a pillar blind that hadn't been played this ante so it wasn't debuffed, then used the death card to copy a card that had been debuffed to make it the card that I copied three times with DNA. The card I turned with Death became un-debuffed, but then the two DNA cards that I didn't used to Death became debuffed despite nothing else being done to them.
Sorry there aren't any screenshots. It feels like the debuff got transferred to the two copies somehow.