hi the quest https://www.wowhead.com/quest=13098/for-posterity is marked removed from game in ATT and wowhead but the quest still up and the first comment in wowhead say that fact

These quests are in Gun'Drak dungeon (29840: Wowhead and in ATT, 29844: Wowhead and in ATT). Quest 13098 is unobtainable.