Sometimes it is just wrong words being put in here.
If you are recreating a large part of it, most probably you can come up with your new BP faster than fixing the old ones. You can just look at the existing code/bp and get inspired, and create new BP from that. It is that simple. Be smart not to use the same variables /function name as it meant that you copy/paste part of it (and therefore, your work is derivative from others - not allowed).