How to install maps into minecraft server?

I downloaded cops and robbers 4.5 and it worked fine on single player but when I copied and pasted it into my server, I played it and there was a completely different map. I also tried this with one of the other versions of cops and robbers

Make sure that you have deleted the previous server world, and make sure the world folder is called world as the server won't know that is the world. Servers are different to single player so you can't just add loads of worlds and select one easily, you have to tell it which world is the world you want.