That's the way it works now. The advantage is that there's no separate "save" stage required, which is often going to be a timesaver.
This new way of mixing down is slowing me down..adding three unnecessary steps. I liked being able to mix down ads straight to a waveform in edit view, finish putting the polish on, then save from there. I'm really quite annoyed about this.
Maybe the company I work for does things differently to everyone else or something.. but to me feature removal = bad idea.
Okay.. I after fiddling a bit more I see the point. But, if I save to mp3 and tell it then open it in edit view - then I resave.. I'm losing a generation.