I can confirm this is the case. This was a big feature request for us in X1, and ultimately implemented in SONAR X2. That particular feature is actually listed as one of the additions in the "What's New" section.
http://www.cakewalk.com/products/sonar/whats-new.aspx Sorry for the confusion! If you want to give it a whirl you can give the
X2 demo a try, as there are obviously a number of additional enhancements that go beyond that one particular feature.