Credit for the following goes completly to Tresclub (Warren) who posted his experience elsewhere on the board. Since there have been so many questions on how to bypass the games AllStar choices, I turned his narrative into a 7 step list.
Have fun

and Thanks Warren !!
- 1. Copy the league in it’s entirety to a different folder
2. Create a NATL Team in the National League, and an AMER Team in the American League (or something similar in your league)
3. Go through the rosters, releasing all the Allstar players
4. Go into Edit Free Agents, and sign them to their respective Allstar Team
5. Auto-generate lineups and pitching rotations, or set them up yourself
6. Remember that in ASG tradition, the starting pitchers can only go three innings, and play everyone you can.
When your done, restore the copy of your league.
Henry