The quickest way to regenerate directions for a route (or to replace missing directions) is to use the Trace a Route feature to replot the route by tracing over it.
I am going through a lot of existing routes (that I drew up) fixing and adjusting the automatically generated directions. Every route has a lot of Directions that are wrong or just missing.I find that if I go through a replot the route section by section, most Directions are auto added correctly. Not all, but most.
Is there a function whereby I can just recompute all the Directions? Not do a replot - the route is correct. The problem is the Directions are not.