I noticed in a project that most of my tracks had the Direct Routing button on. I’d not knowlingly turned it on, so it must have been somehow by accident … Should it be off by default? I’m not even totally sure what it does (!), but if there are no outboard FX being used, has it any function in-the-box?
When activated it allows you to set and activate outputs for all selected channels at once.
I never use it and it is not set “on” by default. so you probably just hit something by mistake.
Regardless, the full explanation and how to turn it on/off is in the CB op Manual page 364.
Who knows… maybe you can use the function. 
Regards 
Thanks for the reply. Yes, I must have hit something in error. I’m going to turn it all OFF and forget about it
If you mean the slot with the default output routing, this button is “on” by default. switching it “off” will cut the signal.