Super excited for this! Do we need to start over to reach chapter four? When I pick a old save it still ends in chapter 3
It's usually better to start afresh because of the changes in variables and so on, but in this case a save slot made further before the end of chapter 3 should do (like mid-chapter 3 or smth) because the last pages/screens of the previous chapters can be overwritten after the new chapter is added (the code/script I mean). Hope that helps!