Change Minecraft Map Version?

Huhu, does anyone know how to change the version of a map?
So if my map runs on the version of 1.13 but I would like to have it on the version 1.7? How does it work?

Just select the 1.7 and go to the map. Much of Redstone and in general will not work anymore or whole blocks will not be there anymore. Are two different versions.

Not so you just have to start them in the version of your choice but then many blocks will be missing

Haha yes I've already tried that. The world can't be crashed. She just crashes. So the whole game. And if I want to open afterwards in 1.10 the map is completely gone. (So then you are in a, new "world. Without built and without inventory

Haha ok pity 😂 then it probably does not work because of course I have worked and I crashed only a few times the whole game

Not much loss at all. Minecraft itself is also no longer able to do so because the differences after almost 5 years are just too huge.

What you can try, and completely without guarantee, is Forge. If you start 1.7 with Forge and want to open the map, Forge will tell you that there are missing blocks and remove them from the map.

Can work but can completely destroy the map.

Eben, two different versions.