Bro idk how to tell you this but this was for last season, afaik the way it works is so long as you already did the intro on one character FULLY, it’ll already unlock the artifact so it’ll be -debatably- optional to do the intro mission for your other guardians. If you happened to yeet yourself out the intro prematurely before completing it the first time try restarting the game or doing it on a different guardian.