The mcctoolchest is a joke, it kind of works but it fails A LOT of chunks. There's universal mc converter that looks promising but it's ridiculously payed. WHY
You know someone just need to create a big mc editor for, well, obviously edit your worlds whatever you want, and it would just have a **FREE (and FUNCTIONAL)** platform converter setting... instead of those garbage dump of stuff you need to do (and pay!) for a map.