bapu
The other aha! moment was that I should probably open every project once after any major upgrade from CW (unless a patch was to address a specific project related opening problem).
Since I pretty much have upgraded (thus far) for each new version that process insures that at least once a year I will be verifying that all my past projects still "work" .
Yep, I do that too, and that's why I precede each filename with the SONAR version, e.g. "X2_", X3_"
Helps tons when refreshing old projects in new DAW s/w.