Basically this is the issue I'm having..
I'm trying to find page view counts for a bunch of SKUs..
http://i43.tinypic.com/2u4lzjc.png
1 = 1st dimension, the main source breakdown, where pageviews > 0
2 = 2nd dimension, breakdown within the source by SKU, where page views = 0
3 = 3rd dimension, individual SKU breakdown, where pageviews is once again > 0 (!)
So basically why is it 0 during the SKU dimension, but not 0 in the other two dimensions??