Achievement/Conquest Window Doesn’t Checkmark Boxes (I.E. GR55 with 6 sets)
The Achievement/Conquest Window is slow to update and at times will not reflect say a GR clear with the required set. It will update sometime but it is still considered complete and if you meet the requirements for the achievement/conquest, it will still finish even if the check boxes are not updated.
As previously mentioned, sometimes the checkboxes are slow to update, but they are tracked. Just complete the other 5 sets and you will get the conquest.