From my limited experience with Bryce, only terrians can be exported directly. Now, some 3rd party applications can perhaps help you out. 3DExplorer might just be one of them. I've only played around with the Demo version (in free stuff I believe, if not, try ZDNet). It can open just about ANY application file and allow you to look at the elements. This might be the missing link you're looking for. :)

The doctor says I have way too much blood in my caffeine system.