[Darryl Ramm]

You need to work on how you are describing stuff. You mean you want to play back midi into the Korg and record the audio out.

OK your Korg only does MIDI over USB, no audio interface support.

So if you want to record the audio you have to have a connection that signal flows over. It makes no difference wether you are playing the keyboard or if it’s playing a MIDI sequence from a Pro Tools MIDI track. I am not following what you have done before but if you have been recording audio from the Korg before you need the same connections... the line output(s) on the Korg going to line input(s) on your interface. Get recording working with you playing the keyboard first then add in the MIDI. Remember you have to record to a *audio* track not an instrument track.