Yup but you need Bryce 6.1. 
An .obp mesh needs to be a positive and booleaned with a neg object. This can be anything at all hidden within the structure of the pos object.
Grouping these two objects will bring up an icon in the icon tower labled [C]
clicking on this will create a' collapsed' or 'converted' mesh that an now be exported in one of several formats.
Hope this helps.

Available on Amazon for the Kindle E-Reader

All the Woes of a World by Jonathan Icknield aka The Bryster

And in my final hours - I would cling rather to the tattooed hand of kindness - than the unblemished hand of hate...