IIRC, this was the first scenario I ever created, around 2003/4 something. Been a while since then.
I switched between OOBs to get Swedish ID flags but Finnish weapons, for the SFK ("Swedish Volunteer Coy"). The easiest fix is probably to re-buy the units for player 1 using the standard Finland OOB...
I have a few days off. I'll update the scenario and sort it out.