The odd thing about the double layers is that the track sounded fine without that phazy effect you get when two of the same midi notes are triggered simultaneously. Also, on the staff view there were no double notes, which does happen when you accidentally paste over existing midi events.
 
The problem with the CAL script only happens when I try to record one of the split-out tracks onto an audio track. Split Notes To Tracks works as it should (aside from the double layer), the problem occurs when recording the midi track to audio after the split. I didn't try deleting the first layer of the double layered track to see if it would record. That didn't occur to me. I never got past trying to record the first split-out track, since the program crashed each time I stopped the first recording at the end of the track.
 
   

in the piano roll view, click the note on the virtual keyboard, click 2 on your keypad to nudge all selected notes to track below. be sure to put a midi track there first. quick work of splitting notes.

Blogman
I tried what you suggested, but all I can manage to do is move the row of midi notes down to the next keyboard note below, rather than move it to a new track. Cool trick for what it does do, thanks for pointing it out. Is there a way to move the note up to the one above? I tried all the keypad numbers, aside from 1 & 3, which nudge the note to either side, but I couldn't find a way to move it up to the next keyboard note above the selected note.

You just need to move the focus to the Track view (e.g. click a track header in the TV) before hitting Num2 or Num8.

Btw, why do you have to record the drums onto individual tracks just because you're using Triton? You don't like using a drum map?

Speaking of Drum Maps - here's my tutorial on the topic if you don't know how to use them.  It is Vastly superior to editing on multiple midi tracks, IMHO: http://blades85.com/music/sonar/88-specific-topics/79-sonar-drum-maps
 
Hope this helps you find a better workflow.

Ditto what Biflipper does. It's quick and never screws up.. Clone the track as many parts are wanted.  
Hi light everything but what you want to keep and delete. 
Rename each track. 

I will reiterate my previous comment.  Event Inspector takes care of it for you.  Easy as "Cake".

I watched his Event Inspector video before but I don't think it was as fast as the nudge method. I'll watch it again.

Jlien X
You just need to move the focus to the Track view (e.g. click a track header in the TV) before hitting Num2 or Num8.

Btw, why do you have to record the drums onto individual tracks just because you're using Triton? You don't like using a drum map?

I think I did try clicking the header in the TV, but still couldn't get it to paste into the new track. I may have done something incorrectly -- not unusual for me when I'm learing something new.
 
As far as recording onto individual tracks rather than using drum maps, the truth is that I tried working with drum maps years ago and never got it right, so I adopted the technique that I'm using on this song. This is an old song that I recorded a few years ago, thus the Triton. These days I've been using Session Drummer, so I just use the mixer to mix the drums and control them individually.
 
For me old habits die hard when it comes to recording. Once I find something that works without glitches and surprises, I tend to stick with it, even though there may be more sensible ways to work. I burn out fast on solving software mysteries, as I'm sure most people do.
 
Now I have to go figure out why I'm missing plug-ins in X3. I had them in X2, but they've vanished into thin air. I can't find Addictive Drums, which I know is new for X3, but I'm also missing plug-ins that I was using in X2. But that's another issue that someone else started a thread about a few days ago. I guess I'll go hunt that thread down and see if it helps me.
 
Thanks for the help from everyone who has offered ideas in this thread. I've learned some new stuff.
(I hope the quote button works. I don't think I've tried it yet in this forum.)  

Oops, thanks X, left out the all important step where you Press D to switch the PRV focus back to track view then press 2 and watch the note split to the track below. :)