Mr. Dan said:
the "original" extensions would be the ones that emerged from the "original 32 series" that was taught before the introduction of the 24 series kenpo. there were 32 original extensions which would be the 32 orange belt techniques. I currently study the 16 series which is the 32 cut in half and extended to 3rd degree black belt ( for belt requirement purposes). I used to study the 24 series and really enjoy the extra extensions contained there and teach them to my students as "treats" from time to time. All of the relationships and catagory completions are contained in the original 32 extentions therefore the extra extensions are not needed to complete the Parker system. I am no master and havn't figured everything out YET, but I am relaying info that has been told to me, hope it is useful.