So I went back with the fireteam last night to take out calus, we had done everything else in the raid Tuesday night. Got a bunch of keys to unlock the chests. When returning to the Leviathan, I try to hit up some chests. To my dismay, they keep saying the keys are required. I check my inventory, and they aren't there. None of them. Not a single key. Clan member told me if I started a new character there was a known bug that may cause this. So thanks, bungie, for making hours of my gameplay worthless, by making me lose my chest keys.