In X1 (and every version of SONAR since V-Vocal was introduced) creating a V-Vocal clip automatically muted the underlying non-modified clip.  In X2, at least on my machine it no longer does that and I have to manually mute the underlying clip so as not to hear the tuned clip with the original.
 
Anyone else?
 
John
UPDATE:  Seems like I was the only one experiencing this, but just in case anyone else sees this, re-installing X2 from the original download files fixed the issue.  A little scary since that means that something went wrong the first time without any symptoms other than that, but at least it's working now.
 
UPDATE II:  Seems the problem only happens in take lanes, and I didn't test post-reinstall in lanes.  So I'll follow up later tonight and see if the reinstall actually fixed the issue.

Automatically muting here for me.  

It muted the original clip when I created V-Vocal clips. Doesn't actully remove them when you click "remove v-voval clip". amd does not mute the, either.  Took me a couple of hours to figure this out. What am I doing wrong? Or is this a bug?

Interesting-  Are you guys on Win7 64 bit with SONAR x64?  I wonder what could be different about my setup?  Maybe a corrupt download or install? 

I may try a re-download and install to see if it persists.

John

Bump with additional info in the update in the original post.

This is happening to me as well. Seems related to take lanes. I opened a project I had last worked in with 8.0, went to add a V-Vocal clip to a portion of one of the takes (via. the take lane), and after making adjustments, I was hearing both the original and the V-Vocal clip.
When I collapsed the take lanes and applied the V-Vocal effect to the same region from the collapsed track, it muted all three underlying takes, but I also heard nothing. The V-Vocal clip was added to the first take I had (which was muted), so since it remained muted, I heard nothing.
I moved the "keeper" take to the top, tried again, and this time, all three were muted and the V-Vocal was applied to the second (muted) take.
This is with the latest X2a update. Grrrrrrr.....