The dealer in here refused to change transmission oil cause its not needed. Talked with techs many times and they showed me the service computer which also indicates its not needed.
After that, I sent an e-mail to BMW AG for telling them to change my transmission fluid on my e92 m3. They sent a reply to me which states that will take care of my problem. And I got a reply from Germany which states its not needed to change transmission oil on my car. Now, I am shocked.