Hi! Elements such as this one: https://www.openstreetmap.org/way/1344893092 are not routable. So with your edit you actually disconnected https://www.openstreetmap.org/way/1175573366 & https://www.openstreetmap.org/way/1175573367 , the software won't be able to create a route between them. One of them needs to go all the way trough the parking area (the road most likely).