Better read up on this in the online manual. It sounds like you are not understanding the process completely. You use the template only to start a new game. Once that is done, the template remains in the folder shown below, available for the next time you want to start a new game with the same set up and at the same point in time.
And yes, according to the manual, "Templates created
during the game creation process contain only the structure of your game. Templates created
after a game has started include all of the players in that game as well."
Read more here:
Out of the Park Baseball Manual