My answer based on the ACTUAL hypothesis presented.
 
I would continue working more or less uninterupted.
 
SONAR currently works awesome for most of the artsy fartsy music dork stuff I do and for the things I WANT to do that SONAR seems to choke on its own [REDACTED] on I just do the work in Reaper.
 
Ya, I'm pretty pleased with my current setup. I'm actually able to do pretty much any fartball thing that comes into my little fartball brain if I put a little fartball grease into it.
 
Hooray!

Beepster
I'm gonna answer this as if SONAR all of a sudden completely stopped working for me through some zombie ice magic anywhere at all. Like I could never ever use any current/previous/future version forever.

That is exactly the premise of the POLL, including that each participant is currently a CW DAW user. 

Oh... and I wouldn't have been able to actually DO any of that without my awesome buddies around here. I haven't had to ask a question on ANY other forums once I joined here.
 
For that I am forever thankful.
 
...
 
Okay... that was soppy.
 
WHO WANTS TO WRESTLE!!!
 

MUD?
 
Otherwise no.

*sad trombone*
 
*forlornly begins emptying kiddie pool filled with gravy*

Don't fear...

synkrotron
Don't fear...

the gravy?
 
*crazy guitar lick*

I still have a working copy of SONAR Producer 4 on an XP server box.  Why change?  
 
(Oh yeah, and because it's expected of me... NOTEPAD!  )

Nothing wrong with Notepad, I use it every day.

Yeah, big Notepad user here too...