KRBrevard:
Have you made that work? I can't find any way to edit my network lines unless I remove it from the network dataset source list, edit, then re-add. Which cannot be automated in python.
I hate that I can't create an ND in python (there must be some silly reason behind this) but I am hoping to just have a feature class already set up, edit the feature class with new lines, and re-build the ND.