Save a copy of an FM10 book with all documents, images, etc.

I was asked to update a FrameMaker 10 document but had no access to the original author or any information about the existing book. I have done so, but now many images and other elements are no longer needed and it is not clear how I can separate them out. Many other media applications offer the option to save a copy of an entire work and all of the elements it uses to a separate location, thus copying only those items that are actually used and leaving behind those that are obsoleted.

Is there a way to do this in FM10? I can't find one.

thanks!

Larry the O