These routing anomalies are precisely why many users prefer “track” files. Track files lay on the road as if you took a sharpie to a paper map. It’s just “hi-lighting” the planned road. It’s up to you to keep the gps’s chevron on the route, or not. Note that some Garmin devices will not import a track, at least without some really cumbersome manipulation. If I recall, the 396 is one of those.