It used to be if you held "CTrL"... and moved a fader, it would move them all.  Same for any adjustment.  It would change ALL tracks.  Useful for common settings like the console emulator, turning it on/off, etc.  Numerous other things.
 
But...it doesn't seem to work anymore.   Did it change?

I believe you have to select the tracks you want control of...(highlight them) ...holding  shift?...and if CTrl is not the key that does, shift reheld and select the button/effect,task, you want all to tracks selected be effected, on tracks selected...should work....Right?
 
I am not using Sonar at this time,...so, ..?
 

Previously needing to select tracks was not required
It was global...so you could make the change to all existing tracks WITHOUT a " select all " step. I used it for faders, pro channel on/off, etc

Yeah I noticed this too with 2017.06, but I couldn't remember how it was supposed to work.  But the manual keeps talking about if you have nothing selected everything moves with the quick group and I couldn't get that to work.

mixmkr
Previously needing to select tracks was not required
It was global...so you could make the change to all existing tracks WITHOUT a " select all " step. I used it for faders, pro channel on/off, etc

I use it on faders myself, but didn't think it worked for things like pro channel.
Does CNTRL/select none faders still work ?

It worked on basically everything. If I wanted to pull all the faders back a bit you could. Of you wanted to adjust the console emulators....either type, drive you could. Turn off all EQ in the pro channel..etc.
However it did not affect/change the busses.

This is a greatly missed feature. I learned about it from Craig A in a thread, so maybe he'll read this too?

So the CNTRL/select doesn't work on faders anymore ?
You are correct, it does not

Probably does. Not at the computer now
I believe you used to just hold cntr and a change on one track changed all tracks the same way. Maybe cntr +A is the new procedure

I noticed that change within an hour of installing the update. I just thought "good, it's about time" and moved on. If you thought losing that feature was a bad thing, then you've never moved 50 faders by accident.

Nope, you need to at the very least quick group a bunch of tracks, THEN used ctrl to adjust the relevant control.
 
Same applies to busses