Change SUMO config on remote instances for CARLA-SUMO cosimulation

I am running the CARLA-SUMO co-simulation example ( I noticed that the sumo instance is started locally if not host/port are specified. However, if I specify a remote host/port (not localhost), I am unable to change the SUMO cfg/net file. I have to manually start the SUMO instance on remote server using a cfg file every time. Is there a way to switch the SUMO cfg file via TRACI remotely, like we do for CARLA load_world() function?