User blog comment:Burk89/Hidden 31 wells in revelations/@comment-96.227.53.176-20120113211901/@comment-5503561-20120113220006

That unchecked DNA box is for treasures, even if you have them all, like I do. Probably because of yet-unreleased DLC. The same thing happens in Secret Locations if you don't have Vlad's Tomb.