Only if the scenario is a default game or using default game files from the default location. What I did on my scenario is set all the moons up to use default files, then add all the custom planets to scenario, whenever the devs update anything in the default game, lets say they change the terrain xml for one of the planets, the desert planet for example, then my scenario effectively gets updated. Because any default files it uses, it grabs from the default file location, so using default planets in the scenario, they will gett updated simply because you dont drop the default planets into there own folder and put them in scenario folder, you dont need to, game will take those files from default location, so thats effectively how you keep some planets up to date in a scenario but it only works for default planets.
thank you it was very helpful i will learn it. There was a guy who has Conquer on his own server and he asked in scenario comments. I understand him because I make many updates.
Just keep in mind for games already started, you may need to delete the save file folder for that planet if you get terrain errors, usually an xml has changed or something like that if that happens, also for MP the players connecting to server will need to delete there cache folder content or they will get terrain bugs locally that no one else sees ingame. The other thing to keep in mind is some default planets have teleporters and if they dont connect they can break the game for the client. I try to avoid default playfields with teleporters or stargates.