Service with selector removed is causing wrong haproxy.config in OpenShift Container Platform 4

Issue

• When removing the selector of a service exposed via route, restarting pods and adding the selector back, the haproxy.config contains invalid backend endpoints.
• Removing the selector from a service fails to remove the backend configuration in haproxy.config of the router. This is causing specific requests to fail as they are routed to a backend that does not exist.