They have destroyed the ones they cut out. They have nothing left to hand over.
Do you believe the reason given for them cutting out some of them? I do remember back in the day when I used cameras with film, it was a no-no to cut up the negatives, even if there were blank ones. There's no reason to do that. Obviously, if there are photos with nothing on them there's no sense in keeping those, but you never interfered with the negatives.