[The Game]

I will try to do my best to guide you through to set up a fictional league with real players. I will start in 1901 when my team the White Sox come into the league.
1. Start a historical league with you desired season. ( for my example I will not import history)

2. Go to League Settings - Global settings - Add New League - Fictional
I am not using any minor leagues since there will not be enough players to completely fill up AAA.

3. Go to fictional League - team by team and mass delete all players and coaches. Team page - Players - List all players in organization . click the bubble to highlight all players - right click - delete. Go To League settings - Release All Coaches & Scouts if desired. There are alot of them so I will not delete them, normally i would.

4. Go to historical MLB - League settings - Delete This League. Might want to make a backup prior to this in case there are errors.

5. Now that the fictional league is all that os left go to League sEttings - Schedule fantasy draft or let the AI sign who they want or manually assign players to teams.