What's new in the network dataset build process for Arc 10?

Discussion created by acoffin on Nov 3, 2011
Latest reply on Nov 3, 2011 by acoffin
Can you please point me to a reference document that tells me how Arc 10 Network Analyst build function is different from previous versions?

I'm rebuilding a road network using a feature class of lines for the roads. In older versions of Arc (pre-10) when I used my own set of nodes (i.e. intersections) to override system junctions, I got 21730 edges after building. Now, in Arc 10, with exactly the same data and using my nodes to override, the network dataset builds out at 23786 edges. This is a substantial difference and fundamentally affects my results. What is Arc 10 doing during the build process that is different than what 9.3 and earlier did?