Whenever I try to copy my customized pvp map that I made in single player, I lose all of the structures that I have created. It is very frustrating as I put some serious time and effort into creating the map. Any help would be much appreciated.
Please check in the server.properties if world_name is the same as the name of the world folder which the world is in (e.g. if the name of the world is "Mah Survival Map", world_name has to be "Mah Survival Map" too.)