Well, now I know. Amazing how long I looked, but got the answer in 10 minutes from the good folks on this board. As an aside, can anyone suggest a way to record MIDI from Groove Agent into PTLE 6.4?
The only way you might be able to do it is to run Groove Agent inside a VST host like Bidule () and connect it to Pro Tools via a "virtual MIDI cable" like Hubi's MIDI Loopback Device or Midi-Yoke.