User blog comment:SupremoJunior/Is killing Damian Wayne a good idea?/@comment-246292-20130226135930/@comment-1639863-20130226202458

Well, when Jason died, he was resurrected because of a weird Suberboy Prime-Universe alteration, if I recall correctly. In later incarnations, they say Ra's al Ghul did it because that's a lot easier to explain than telling the whole Superboy story again.