What you need
- legacy MCEdit
- This MCEdit filter (see below)
- WorldEdit for Minetest
Download: Recommend (mts) / Legacy (we)
Put this in MCEdit folder/filters
Step by Step Tutorial:
1.: Find something you want to convert
2.: Open the world in MCEdit and find it again
3.: Select the area you want to convert
4.: Click the filters tab, select Export to Minetest MTS schematic, enter a name, set options which mods you want to use and click Filter
5.: You should find a file like this, copy it to Minetest folder/worlds/World name/schems
6.: Open Minetest, find an empty area, set pos1, and use //mtschemplace Schematic name. If you have used the legacy filter use //load instead