Force Sensitive Archive

hey all, i just got my visit from the sith and killed them, took the waypoint datapad and when i got to the waypoin, it was empty, so i dont know what to do, i didnt think id get another visit though, because in my quest journal ive got the "investigated area in datapad" or whatever...

has anyone else had this problem, or could someone tell whats goin on lol
thanks