The channel changer will not trigger the subcontrols to send their values UNLESS 1) the supercontrol is a channel changer (type 1) and 2) the subcontrol's value on the channel we arrive at is different.
I've been playing around with a knob that controls both a channel changer supercontrol AND its subcontrols, but it's going to be hard to get the results you want that way.
One option to be aware of is "Send current values," which is an option for supercontrols. Just thinking out loud here.... good luck finding something that works, and please report back as you move forward in this. Eventually we can distill it down to a feature suggestion, but I'm not clear on exactly the use-case we're talking about just yet.
Best!
Dan