I changed many things in scattered files (talewords.campaign using dnspy has most of the code used in game, also under sandboxcore there are xml for items and troops and under native even xml for base movement Speed) and every change seems to apply to the game. But I can only change those files in the original folder. If I try to copy in a custom folder rather than replacing the original files they don't work anymore, I can't even create a blank mod using custom folder, YouTube guide didn't help me much.l, I get different results.