You did the correct thing. CWB files are actually a cause of greif for some people. I have old Sonar project folders using CWP going back to sonar 7 I can still open and load those files no problem. 
There's a thread here today where someone used CWB and all the audio went south. 
I tried saving and re loading a CWB just to see for myself and the audio was missing from the song even though it said it was unpacking audio, the tracks were greyed out. 
I would have had 3 copies myself, 1 copy is living dangerously. 

Wow, thanks allot, Cactus Music! I was super worried about having saved the songs incorrectly!
So, if they are corrupt, they were corrupt before I saved them.
Peace

Thank you so much.

Hello...What midi playback method/device path are you using in sonar?

BassRocket
Hey everyone,
Just got my new dream machine PC up and running.
But I'm still noticing both dropouts in synth plugin playback and a sluggish behavior of Sonar in general.

I haven't done much to optimize things in Windows 10 Pro yet. Also, the project is from the saved Projects folder from the past system. Could the saved project be corrupted and causing Sonar to act sluggish? I don't notice it at all times just every now and then. The screen scrolling and movement seems jittery, not smooth, something that has always been the case with my Sonar unfortunately.
I'm hoping to buy the U-he Diva soft synth, which is known to tax CPU's very hard. Surely my latest gen hardware should be up to the task, right?
As always, if any of you agents are caught or killed, the agency will disavow any knowledge of your involvement.
Thank you and good luck, Jim! lol
New system:
MSI SLI Plus X299 motherboard
Intel Core i7 7820X (8 cores)
16gb Crucial Ballistix Elite DDR4 3200 RAM
Samsung 960 EVO Pro M.2 SSD 512GB (OS)
Samsung 850 EVO SSD 250GB (storage)
WD Velociraptor 1TB HDD (storage)
MSI AMD RX580 4GB graphics
Focusrite Scarlett 18i8
Akai MPK261 keyboard controller
Sonar Platinum

One thing I did with my system was to disable the USB and purchased a dedicated USB Card from Sonnet Allegro:
Note: I turned off the on board USB in the BIOS.

Ciao.

Chuck : Good to see you doing pro support system setup is key to a smooth running system ...
          : Thanks for the ongoing updates  Big Fish Samples Rock
          : You can catch me at: IRC Freenode  ##Hardware  ..Star2017 !

Maybe try some other compatible memory to test with? I've never had much luck with Crucial Ballistix ram.

It is true the best way to troubleshoot is by the process of elimination. Pretty hard to do with our DAW setups as this involves trying a different computer, different DAW and a different audio interface. 
Well the computer I can do as I have 4 or so kicking around, most people might not have that option.
The DAW, well it's never the DAW so forget it..
I have 4 different audio interfaces kicking around which help me figure stuff out pretty quickly.. It will answer the question of where to place the blame.
So that is something you might want to try.  Is there a music store you can go to. Most will happily let you try gear for a few days.