If there's a way to do this, I'd love know. :)
 
For me, this most notably manifests when using a wind controller (EWI), where the note isn't audible until CC2 (breath) goes non-0. Let's say I play a note slightly late with the EWI... I quantize that note, but the note still starts late, because while the note might be moved right to the bar line, the CC data doesn't make the sound audible until the original note time.
 
So having CC data that happens over the duration of a note both moved to line up with the new note start time, as well as scaled so that the CCs happen for the potentially new duration of the note... that would be cool.

Uncheck the "Only Notes and Lyrics" option in the Quantize dialog.

Didn't see this reply here, brundlefly... sorry for the bump...
 
Anyways, I would say that this is not ideal for dealing with CC2 data.  I don't want to quantize the individual CC2 events. What would ideally happen is:
 
1) if it's note start only, not duration, all the CC data for the duration of the note is shifted/offset the same amount to match.
2) if we want duration as well, than the CC data the correlates with the note duration is also squashed/stretched to match the new length of the note, in addition to above.
 
If you do uncheck the "only notes and lyrics" option in the quantize dialog... for CC2 breath data, you get weird pulses of CC data, the size of which correlate with the strength you set in the quantize.

Yes, sorry, I didn't read your post carefully enough. That situation is going to require a lot more logic.

Good request, it would be useful.   Unfortunately would seem to be pretty complicated to implement.      Perhaps a selector under "quantize special" that allows you to select CC by number, pitch bend, key switch range, and patch change --- each of those often needs to be moved when a note is moved.   In fact, I hit this problem most often not with quantizing, rather with "humanizing", moving notes off of a snap point, and accidentally moving before or beyond a patch change, pitch bend, or key switch.