I've been working pretty hard on this and am pretty happy with the results. I'm not an amazing Lemur programmer so there's a lot of hackey scripting in there. I don't guarantee that everything works but I think I've tested it out pretty well.
This editor allows for bi-directional communication with the PreenFM2. You mainly just have to set the MIDI channels, which is the only variable (MIDI_CHAN) at the global scope. Once that is set, you should be good to go!
To sync the editor to the current patch, click on the "MIDI" tab and press the "Request Voice" button to which ever instrument you want to grab. It only pulls one instrument in at a time.
Feel free to edit or improve, but please share if you do!
https://liine.net/en/community/user-library/view/606/