Importing world not working

when I upload a world into the import folder and create a server from that, then I spawn in a complete different world with a complete different seed. And when I try to rename the world in server properties, then it let me load into a different world as well. I set up the mineOS on Debian.
Please help me. I already tried almost every fix from any thread I found.
So now when I try to start the server with the world it doesn’t even start up.
I managed to get the server to work, and I got the items like in my world and the seed is the same, but everything that was built is gone.
Please help me…

I had posted a solution on how I upload worlds, and has worked before.

These steps are independent of how or where the MineOS is housed in how it is built.

Well thanks a lot, I got it working now