Basically, the latest Clone Wars episode to air, Sphere of Influence, featured Greedo. We were hoping that, in order to keep Greedo's current history intact, that that particular Greedo was Greedo Sr., the retcon that was introduced to explain the appearance of a young Greedo in a deleted scene in The Phantom Menace. However, with the purging of Greedo's entry on the StarWars.Com Databank, it was made clear that the Greedo in Sphere of Influence was the same Greedo in A New Hope, and the same Greedo in the aforementioned TPM.
Thus taking a steaming [parasitic bomb] on 16 years of continuity. It was a Wookieepedian's worst fear realized.