A patch for NBA 2K12 will be released today, according to the official NBA 2K Facebook page. Many bugs will be fixed, and trade logic has been overhauled. When you become the starter of your team in My Player, your team will no longer trade away half the team. (Too late for me…).
P.S. I cannot link you to the full list due to the fact that Facebook is blocked at our school. Sorry for the inconvenience.