Audition 22.5 mp3 format, save problem

Hello. When I want save my mp3 file, AU 22.5 automatically save it as mp3 VBR format. But I need mp3 CBR. If I want save to CBR I need use "save as" and change format myself, every time, for every tracks. It's spent so much time. Why it's happening in Audition 22? How can I fix it? Audition don't remember my choice. Before I use Audition 13 and everything was good, it remember my settings and every time save mp3 CBR 320kbps.