Node export module imported node as another node numbers
You can't, and you shouldn't.

Node Export requires UUID for a reason, and that reason is decoupling database identifier of a node (nid) from it's logical identifier and address. These are supposed to be defined by UUID now, so if you are using UUID module and still have addresses like http://example.com/node/1 then your site is not using modules in a way they are designed to work.

Also, as Node Export project page says, if you need anything fancy on import, you should export in Feeds format, and use Feeds for import. I believe that updating existing nodes is a case where it would be recommended approach.