1. Make your changes in noggit
2.create a new patch called "patch-x.MPQ" (x is a number higher than 3 and the file ending has to be in capitals, example: patch-4.MPQ)
- for that you can use any MPQ Editor, LadiksMPQEditor for example
3. create in that patch following folder structure: worldmapsazeroth (azeroth because you made changes on on eastern kingdoms)
4. go to your project path (where noggit saves the changes) and drag'n'drop the adt's from "projectpatchworldmapsazeroth" into the azeroth folder inside your patch.
Hope I have nothing wrong now xD