User blog comment:Master Sima Yi/Assassinews 19-03-'14 – Two Assassin's Creeds for 2014?: Unity and Comet/@comment-31.119.156.145-20140701175146/@comment-27202257-20140702060945

"The answer to this whole question becomes a retconning mess once we remember that AC2 and Altaïr's Codex clearly show that Ezio's Apple was the one those Templars got from Cyprus, which was the place Altaïr hid his Apple after the events of AC Bloodlines as stated in the page 26 of his codex"

...but Altair lied about that. He meant to leave the Apple in Cyprus, but changed his mind and took it with him when he went back to Masyaf. He said the Apple was there to throw those pursuing it off its trail, and he buried it with him in the library. Someone correct me if I got that wrong.