X-path question (newbee)

The problem I am having is the mainbooktitle does show the tm element when publsihing to pdf. We had a style sheet created for us. They add the text to the cover using a x-path reference (/RDStyle/ResolvedMap/servicemanualmap/booktitle/mainbooktitle). My limited understanding of this is that it is going to publish whatever is seen in the mainbooktitle element. So I should also expect that the tm element should also be displayed?

any help would be great

Thanks

Bryon