On XBOX, there is a thing that happens when you leave a zombie at a end of a round. The zombie just dies if you go into the fog away from the zombie. This also happens on Die Rise, if you jump to another building, the zombie just dies. What hurts the most, on PS3, they got the same update, but this doesn't happen. We need to kindly ask Treyarch to fix this, so we can do the easter egg on Die Rise. Try testing this on Die Rise and on Tranzit. Leave a zombie than go somewhere far from it. Tranzit is reuined!!!