From what I have found all I need to do is rename the save directory, edit the server.yaml file prop: GameName value : New Game Is that really all I need to do to restart the game fresh from scratch? Then - Prior to running for the first time , copy the Reforged files over to the /Content/Configuration dir? What did I miss?
Strongly advise that you use the workshop version of the scenario instead so you never have to worry about a game update to your server overriding the changes to the configs.
It varies depending on host but you upload it to the scenarios folder on your server, rename it, then set it to use that scenario and start a new game. Then just remember to copy over the scenario again from your steam folder anytime there's an update to the scenario so you have the latest changes.