At the moment every Program has allocated recipes - that means that if you change a Program you will not see the same recipes as in previous Programs.
A workaround to get around this is to save any recipe of your choice to Favorites when you are on a Program - then you will still have access to the content through Favorites when changing to another Program.
When it comes to a Meal Plan that is, unfortunately, not possible at the moment. You cannot save any Meal Plan recipe to Favorites due to some technical limitations.