Board Thread:Questions and Answers/@comment-5448995-20151209103103/@comment-100066-20151209203733

If you will go to Category:Deadpool_(Wade_Wilson)/Appearances and Category:Spider-Man_(Peter_Parker)/Appearances you will see the pages where they have appearances. All of those instances should be changed from Spider-Man_(Peter_Parker) to Peter Parker (Earth-616) or from Deadpool_(Wade_Wilson) to Wade Wilson (Earth-616). That will empty out the category and then the Appearances Needed should clear by itself.