Take a bit of care, as the conversion is sometimes not prefect.
A. The converted route might well have some of its waypoints positioned very badly. On bridges, on the wrong exit of a roundabout, in a field, are just three easy examples.
B. If MyRoute knows a road is closed, it will take you as far along the track as it can before the closed section. Then it will backtrack to miss the closure out, before taking you to the closest point it can find after the closure.