inputting chord track from a midi region

Has anyone figured out if there is a way to automatically input chord track progressions from a midi region with block chords. I know by setting internal midi in to a track and playing it back with midi in selected on the chord editor you can partially automate this but you have to keep hitting tab to advance to the next chord otherwise it just overwrites the current one. this is both time consuming and prone to error. Ideally (if you are listening, Apple) you could just play the midi region and it would place the chords automatically.