Bit of a newbie here so hear me out. My friend has a Minecraft Realm with a world he's had for years, I have also got a world I have been working on for years. I'd like to combine these world by taking quite a large area from my world and putting it on his. (and then maybe use something to try and blend them together a little if possible) I know this sounds difficult but if Elon can land reusable rockets, I should be able to combine these worlds!
My plan was to download his world file, take a portion of mine and copy it over into a section of his world, close to his main area. My world is on 1.16 and i'm sure his is a very new version too. The areas we have built in are largely in small areas dues to the fact we both started these two worlds on xbox 360s before the worlds were expanded.
I tried to use MCEdit but support for newer versions is lacking after such a long dead period. I'm on Mac right now (sorry), but I have quite a lot of coding experience. Has anybody come across a challenge like this and are there any suggested tools for such a challenge e.g. MCASelector? I'm up for a challenge but could do with some guidance from some clever folk!