Hi, I have read your question and the answers with great interest. I use polylines (ios 13.5 -> 14.3) to display my routes on the map. If I want to show a new route I delete the previous route. The polyline has then disappeared, but as soon as the new route is drawn, the old route reappears. So it is not possible to really remove a polyline or overlay. Is there a (temporary) solution for this?