User blog comment:Master Sima Yi/Assassinews 05-08-'14 – Assassin's Creed: Rogue announced/@comment-4254431-20140905131951/@comment-4055238-20140905212952

Not necessarily, Crimson. We now have a loophole known as the Blood Vial. They all go missing from the Observatory near the end of Black Flag, presumably by the Templars. If he's killed at the end and one of them happens to have a Vial on them, they could store his DNA until it's needed by Abstergo.