So I am trying to extend the middle section of a multipart route (there are three sections in total), but am having difficulty because the centerlines that these three route sections are on, are actually a single record (in our centerline feature class) with a single GUID. It is my belief that even though the route can be a multipart feature, that the centerlines should be unique records (with unique GUIDs), so I have attempted to explode this multipart centerline. When I attempt to do this, I receive a message saying that "None of the centerlines were deleted as the
