@Guzzist : I agree with you, it gets interesting if you simply reverse a route with a highway, because then it happens that a WP is definitely on the wrong side.
@Rauno-Säteri
So I recommend to always control the route with the WP, a function for zooming helps to recognize a nonsensical deviation from WP at an early stage, for zooming there are several good BT controllers.... These help you to recognize deviations early..!!