The disappearing plugins and effects in Sonar

I don't understand why Cakewalk can't program new effects and plugins to automatically replace older ones when we upgrade to new versions of Sonar...at least in producer. Every time I upgrade and open older projects recorded in previous versions of Sonar I have to manually implement the replacement plugins and effects like reverb, compression, etc. Am I missing something or is this just the way it is? Seems like a net trade off for every time saving enhancement in the new version there's the time wasting replacment of plugins and effects.

You are missing something. The plugins supplied with Sonar are not, with some exceptions, an integral part of Sonar, they are part of the marketing plan for the product. Most users are going to be choosing plugs that come with Sonar or from other developers on the basis of characteristics that they value in those particular plugs. There is no one-size-fits-all effect plugin, and the vast market for effect plugs exists because each plug has unique character. So if you substitute reverbA for reverbB automatically, you are doing the user a disservice. The point of having the ability to use a wide variety of plugs is that the user can choose. Freedom means work.