Maybe something is wrong with your .wok files? I was working on a Coruscant project a while ago (but it was left in beta state), and if I remember correctly had to delete objects with tags 'corcrate' and 'box1'.
Try .wok files from this archive.952cor walls.7z
Also, what is the endgoal of your project? I can help you with setting up map for 953cor module and some other things.