Thanks for posting that.

I've tried using PoseRay just now, following the instructions you provided. However, when I loaded the tree obj into PoseRay, I saw that it still had the rectangular leaf shape to start with. So of course, when I've saved it and then imported it into Poser, again it has that rectangular leaf shape instead of the distinctive fig leaf shape.

I'm not sure what the problem is. When exporting from Bryce, I have the tree set on its highest resolution, but it still comes out low resolution looking like bits of paper stuck onto branches when opened in Poser. I don't know if it is that particular tree model as I don't seem to have that problem with other types of trees.