I'm new to the ArcGIS universe and I'm trying to find a way to programmatically change the starting point of routes on a routes layer. The routes represent sewer lines each anchored by two manholes, an upstream and a downstream manhole. I want to be able to programmatically go through each route set the starting point of the route at the upstream manhole. Would you kindly give some tips on how I might be able to accomplish this?
Thanks a million.