I am starting Whispering Cairn tomorrow (Friend's RotRL game went longer than expected). We are as a Pathfinder game and we are trying out Automatic Bonus Progression. My original plan was to remove all of the attribute bonus items and then modify treasure appropriately to reach the half treasure threshold of ABP.
However, I forgot about Zosiel's Diadem. How should I handle this? Should I leave it as is since it is an artifact and allow for the wisdom bonus to apply on top of the bonus granted by Bonus Progression? Should I remove the wisdom bonus and just have it have the other effects? Should I change the wisdom bonus to something else? If so what?