Every change entered in CVS should be entered against a Bugzilla entry. However, you'll need the CVS tool to find out all changes associated with a particular bug, as it might affect several files; if I'm correcting a bug that I think users might need to patch, I'll generate a patch and upload it into Bugzilla for convenience. In the case of this bug entry, there is a patch uploaded. Does that answer your question?
Open Journal Systems Team
Don't miss the First International PKP Scholarly Publishing Conference
July 11 - 13, 2007, Vancouver, BC, Canada