It is possible, but depending on the map it can be a lot of work.
http://www.hiveworkshop.com/forums/general-mapping-tutorials-278/make-map-work-patch-1-24-a-165482/
Could you fix my map? I don't know english and I don't know how to use worldedit. It is a awsome map, you can play too. It's a simple map, I belive. It's not too much work. I send you paypal credit. Please. Thank you.
If someone else would like to help me, thank you too.