I admit I am doing very little here in hopes this get to the solution...
Check out
https://wiki.ootpdevelopments.com/in...ng_Conventions. The section about "Saved Game" Naming Convention may give you what you want.
If you have both files in the folder with like those "S1" & "S2"
after the "C" piece in the name, I think it might handle automatically alternating between the two year-to-year.
Having that those unique pieces before the "C" may be confusing the loader because it does not adhere to the exact rules for names that can be recognized automatically. As for the schedule you see at first not being at all like yours, I would guess that is because a different file in the Schedules folder satisfying the structure and parameters got used, even if the "loaded from file" says otherwise.