Thanks very much for the reply. Im hoping that all i would need to do is transplant 1e but spirit to 4e bug spirit, 1e network to 4e/20A network etc. I may be being overly optimistic but at least now i know that it is possible.
Thanks again.
very optimistic
There are fundamental changes to the core rules and mechanics that have dramatically changed through the editions.
From floating target numbers, to how cyberware works, to dice pool calculations.... every edition has tweaked and changed things.
So much so that SR 1e and SR5 (let alone 6e!) are entirely different animals.
*****
I'm not saying you can't do it. Just that its harder then just a simple "stats swap" as how you get to those "stats" have changed. For the really old editions you could be, in effect, just taking the storyline and plot points and then converting everything else to the rules edition of your choice by fundamentally rebuilding every NPC and encounter in the adventure to the new rules!
In short: Its not doing to be a "plug and play" experience, but one of research and trial and error.