The problem is I can't change this setting in the scenario editor during editing my old scenario. When I use command --> setting difficulty.industry_density 0 - I receive red message -> ERROR: This command/variable is only available to a network server.

Someone told me that this setting sets up automatically in the way it is when I'm entering the scenario editor. So when it's set up to for example "medium" every crearted scenario will have this setting later. Is there a way to change that ??
Furthermore I want to indicate one thing. I found on my hard drive another old scenario (from 2008) and when I loaded it in the scenario editor it has "industries denstiy --> sponsorship only". How is this possible if "sponsorship only" is a new feature ??
If there is a need I can of course attach both scenarios. I would be very grateful for your response.