User blog comment:AntiScootaTwo/Advanced Warfare Havoc DLC preview/@comment-12521892-20150113225659/@comment-1263839-20150118012917

Dig failed because they remade the map to make it more suitable to Black Ops II. I imagine it would have been less painful if they had simply updated the visuals of Courtyard without changing the actual layout.

The other remakes all worked fine (surprisingly, I know) with Black Ops II's gameplay, as did the remake of the WaW map on Black Ops.