For those who's having problems with replace folder: the update.rpf was divided in multiple files, you just need to change the update folder name to the corresponding name (update_1.rpf, update_2.rpf...).
Here is a topic that explain this change and that's why replace folder is supposedly not working: new update rpf's in RDR 2's directory folder - RDR2 Mods Discussion - RDR2Mods.com