Im trying to remove Oldernburg and Mecklenburg from the list of factions playable in campaign (We cant choose Russia and Ottoman empire in mp campaign because of too long list)

I edited startpos.esf the opposite way as according to tutorial I can make faction playable (I edited 4 values in total) saved and used edited startpos yet still olderburg is there in a list. Is there something else I have to do get rid of a faction?

Btw one on one campaign in this mod is really great, we play it with a friend.