A potential game-save erasing bug affecting Xbox 360 players of Borderlands 2 has officially been patched today, according to developer Gearbox.
The bug originated from players who hacked their own games and then played multiplayer games online with others. It only affected players on Xbox 360; players on PC and PS3 did not face an issue.
https://lastchance.cc/save-erasing-bug-hits-borderlands-2-travels-through-xb-5955869%3C/a%3E%3C/p%3E
Xbox 360 Update Information [Gearbox Official Site]