Perhaps I dreamed this but I seem to recall seeing a vid or reading a blurb about a process that will "de-glitch" overlapping/doubled MIDI notes so notes don't get dropped during playback.
 
Basically I've got a clip running into Zeta and if there are overlapping notes in the same note row only one of the overlapping notes is triggered. I'm thinking this "de-glitch" thingie that I probably totally hallucinated might be the solution. Currently I'm just cropping/uncropping each of the notes out with snap enabled so they trigger properly.
 
Am I on crazy juice or does this actually exist? The googles are failing me.

yeah it's in the Process menu. it even works! not everything tends to work nowadays in that old, venerable, forgotten menu.

Oh, wow. I even got the name right. Nice! Thanks, Spencer.
 
Ah but it doesn't seem to do what I thought it did. Still handy and good to know.
 
http://www.cakewalk.com/Documentation?product=SONAR%20X2&language=3&help=Notation.16.html