Gail Badner ideally the order things are added should matter. This is actually a discussion you , me and Emmanuel Bernard had a few years ago. That discuss was specifically related to dealing with cascading and transient references. But to me it applies here as well.

But to answer your specific question, no, at the moment the order things are added to the PC does not overly matter for actions. There are some minor caveats to that like batch loading, etc.