So I went to change out my weapons for the Nightfall, and all my guns and armor (except for those with set perks i.e. Exotics, Raid Set) had had their perks completely changed! For example, my Comedian used to have "luck in the chamber" and "full aut,' but now it has the slug rounds and cascade. All my legendary shotguns have these set of perks. All my machine guns now have increased stability and crowd control. What happened to my stuff? How can I get my old perks back? This is really frustrating.