My guess too...

I wish Cakewalk was still alive and ignoring it! 👽

I'm actually really getting into the whole audio to midi feature, I recorded acoustic drums, and turned it to midi,,,,then turned that into midi bass and piano.....oh after dropping the midi note an octave or 2.......sounded phat az.........and then I converted lead acoustic guitar into midi piano, wasn't perfect, but was easily enough edited.......next, I'm planning on converting percussive funky Jethro tull style flute into midi, and then turning that into drums and bass????...I haven't done it yet, but I'm hangin to experiment with that

Hi Paul...
 
Sounds as if you're having new fun! Enjoy!
 

I sure hope it continues to work because it's become a Must Have  feature for me for making backing tracks. I can play a bass part in one or so passes and don't have to worry about precise timing or pitch. I don't even have to worry about what the bass sounds like!  I turn it into a midi track and takes a bout 10 minutes to edit and get sounding exactly the way I wanted it. Huge time saver as it would take all day to figure out how to play the bass line on a keyboard for me. 
 
I own a set of digital drums too, but we actually could just as easily set up some mikes on a bunch of cardbaord boxes and record that and use Drum Replacer to trigger AD2. 

Cactus Music
I sure hope it continues to work because it's become a Must Have  feature for me for making backing tracks. I can play a bass part in one or so passes and don't have to worry about precise timing or pitch. I don't even have to worry about what the bass sounds like!  I turn it into a midi track and takes a bout 10 minutes to edit and get sounding exactly the way I wanted it. Huge time saver as it would take all day to figure out how to play the bass line on a keyboard for me. 
 
I own a set of digital drums too, but we actually could just as easily set up some mikes on a bunch of cardbaord boxes and record that and use Drum Replacer to trigger AD2. 

Cactus - very interested. Could you explain your process? I have to chart out some original jazz tunes for a future recording session and I have no problem laying out general chord charts but I do have to notate the lead/head lines. I was going to play them on bass > convert to midi and edit/cleanup in midi > bring into Presonus Notation software.  This would be very cool indeed if it worked....and what a time saver :)

So far I have only used it for Bass and it always works with only few minor edits to the notes. One thing that seems consistent is the duration is always longer than is should be. I select all and drag the duration back about a 1/32.   
 
It\s dead simple. Drag an audio track to a midi track. 
The interesting thing is this feature works on any of my computers running Sonar even if that computer is not authorized for Melodyn. I never use Melodyn for vocal pitch correcting so I haven't authorized it in years.