I'm totally confused with this. Why create a track from a route when you have a proper route. Please explain.
As you know i use TomTom (Rider and Go) for a decade now. This system takes a track and converts it to a route when selecting it in the navigation. The result is a route which is strict to track as possible (it needs roads). But when you need to re-route from the original route it brings you back to the original route at the closest point possible. When you have traffic info enabled. It uses this info also during conversion and recalculations.
So the benefits of a track (stays strick to the original as possible). And takes care of you along the way (recalculations and traffic info).