You must start a new game, for a custom database to be loaded.Alright, well I simply don't know how to update the database after I make my changes. Is it possible at a game that's currently running (I assume that's an obvious yes, but I'm new to the whole thing so I miss obvious stuff often).
When you press Start New Game and the pop-up box appears, tick the change box in the bottom right hand corner like shown: f4e0bca561e4c2f7e6530d579c46236c.png