To my understanding, DG referred to the Keyswitch notes being played or drawn in or copied as legato notes (Logic f.i. has a function called "note force legato (selected to selected)") and to move them for around -10 steps, so they always trigger before the actual 1 of the next beat (or wherever you want them to f.i. change the patch of a given matrix) This way, you can always see, in your sequencers matrix editor, which keyswitch is active at a particular moment in your arrangement.
Conquer,
A# would be 466.164Hz
Ab would be 415.305
I have a handy little widget in my dashboard to calculate these things - if you want to, I could send it to you by email!
Best, Marnix