I'm slowly doing the merc tasks in CS and I have gotten several collects that when you look at them identify as being part of "The Sleeper's Tomb" collection. However when you collect them and look at the achievement window, they are really part of the collect "Don't Be a Guppy". The ones that I have are Dingy Dinglehopper, Garish Gizmo, Threadbare Thingamabob, Soiled Snarfblatt, and Mangled McGuffin. All are misidentified on the item description.
Confirmed bug on my end as well. The flip side is clicking on all of them will complete the CS Guppy collection. Collectables wrong achivements listed in lore | EverQuest Forums (daybreakgames.com) If only we had beta testing...