I see, thanks. And is there any offline method of exporting the song to .wav files, so you could mix e.g. in Reaper? e.g. export each arrow going to MASTER as separate .wav file, would be a nice or useful option. But then you would need to arrange fully in buzz, it would not be same.
You can use sgorpi's mtw (Multi Track Writer) machine to make separate wavs. Each instance of mtw makes its own wav and they shar a common basic mixer interface. So you just insert an mtw anywhere where you want to record the signal to disk. I've used it to export tracks for a friend to mix in Cubase and it worked well.
You could connect the ouputs of IX PatchBay to mtw machines and use the patchbay to route signals for recording to wavs.