Both saves are on mc 1.20.1 and not all the mods line up but im happy to manually fix the things that are broken. And lose things from mods not in my new modpack.

Currently it complains about corrupted save file.

Since a majority of what i actually want to transfer is located within a small area i have considered making a schematic and using world edit to drop it in woukd this work?

I assume most if not all items will be lost in this proccess but im not sure if perhaps i could export/transfer things via ME?

Any help would greatly be appreciated

EDIT: I did it all i had to do was create a new world in the new mc instance then manually copy over world and player files and it just worked.