So your adding lights and they show in worldbuilder and they show in the game? Would like to see a COH2 map with that working can you link please?
Check my 8p_Schweinfurt out. It has working light/lamps and searchlights ALL without any scar/entity/marker or group edit It also can have ALL 4 nations at the same time.
Check out the menu "Scenarios/Teams" and assign the correct players to the correct teams.
What about when you have a 3v3 map. What happens to the extra 2 boxes in Team dialogue. What do u assign to which team the other 2 boxes so u have no enemy teams starting on your territory??