I think sometimes the lineups get reset even with my workaround when guys get fatigued, get benched and then the CPU makes its own "game time decisions". Unfortunately, then you have to put the lineups back the way they were. It is not ideal, but that is why it is a workaround. It is better than no lineup control for me, but certainly not what I wanted out of this game this year.
Last night I simmed through the end of July and at least Helton stayed batting 3rd in ALL the box scores for Colorado in sim games. But, that could vary depending on fatigue, I suspect. You will just have to check after every day simmed, is the only way to combat this.
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