Lost unlocked skins and heads?

Hey, finished a playthrough of BL3 on PS4 the other day. Set to mayhem mode 3 and went back down to kill stuff, everything was great, but then didn’t play for a few days. Came back today to find all my unlocked skins, heads, etc are gone. My money, bank items, stuff I had equipped are there, but none of my character skins, gun skins, heads. Like I never unlocked them. Is that supposed to happen after you beat it once? Does everything reset so you can unlock it again? Feels like something isn’t right.