Monitoring through headphone while exporting.

I am sorry if I am not clear about my situation.

I use the control room feature extensively. I have a cue channel, a phone channel and a main speaker channel with three monitor speakers setup in Cubase control room section. My audio interface is the SSL Madixtreme and the converter is the SSL Alphalink Madi Ax. These two have no routing or monitoring functions like other ‘all in one’ interfaces. The Alphalink has a headphone out but it just mirrors a pair stereo signal of output 23-24 of it. Because it’s not my main monitor output and my external monitor controller has no headphone out, I setup a phone channel in Cubase that goes directly to my external headphone amp.

My problem is this. while real time exporting, nothing goes to the phone channel out of Cubase. It only outputs to the main speaker output channels.

I’d love to hear what’s playing in my headphone while real time export.

Thank you.