PteJack
I have a 42 measures of chord progressions on a midi track that I'm sending through an Arpeggiator (latched from the midi channel.) I want to to create a separate midi track from the result so i can manipulate that.
When you say "An Arpeggiator", exactly which Arpeggiator are you using?
If this is a VST, does it allow you to enable MIDI out? If so , and the Arpeggiator does actually send the MIDI data there, you can than route this MIDI out data to another MIDI track. On that other MIDI track, you do need to make sure it's input echo is enabled so it can receive the MIDI data from the Arpeggiator.
If you have enabled MIDI out on the Arpeggiator VST, then that synth will be visible as an input device for your new MIDI track - just pull the drop down at the same place you select that track's MIDI in source.
Meldaproduction Mpowersynth is an example of a synth that contains an Arpeggiator that can be successfully routed in this manner. I have tried this on Mpowersynth and what I have described above, does indeed work.
I hope this points you in the right direction.