This just happened to me. Received an AAF from Premiere and had the exact same problem when importing into N8. All the regions are in the correct TC position, however the content is offset. They all start at the beginning of the audio file instead of the selected/edited section.
Figured I’d try in Pro Tools just to rule out software issues (I was assuming the problem was the AAF itself because… who would expect AAF importing to be broken on a DAW designed for that and much more… ) Turns out it imported correctly in PT, so I went back to N7 just to be extra sure. Worked perfectly in N7.
+1 to the comment about Nuendo 8 being a solid release…