We don't generally link revised versions of books as it can be frustrating for members when they find a recipe they want and they go to their edition and find the recipe isn't there. I think I need to do some research with the publisher on these editions as I'm not sure how much they have been changed. I'll post back here when I have some answers.
Or maybe you could compare the recipes in your 2005 edition with the 2006 we have indexed and let us know how much it has been changed.