My bad. No. I miscommunicated. Once you tweak the first save, all saves and quicksaves within that particular playthrough of saves will be fine.
I meant it does not carry over to other playthroughs. Every time you create a new character, you have to do it again.
ahh i see. then that isn't so bad. but still official support from larian having the options for 6 party characters will be neat. imagine future patches or expansion break the mod and it no longer works. with 6 party characters i like to see balance made on the encounters as well.