I have recently worked out how to do this (sad, I know, but I'm rather impressed with myself!). The thing is, even though a book has been put in a collection 'folder', it still appears out of the folder in my list of books. Is there any way of it not appearing separately? Does this make sense? When I archived the book out of the collection list, it archived the book in the collection too. Very confusing!
Any help much appreciated!!