prune your collections

We've been saving each edited photo in a version set with its original. Generally, the Photo Browser stacks a new version on top of its original. When displaying a collection, however, the browser doesn't show version sets. The original photos you assigned to the collection and any edited versions of those photos appear as separate files. Having multiple copies of the photos adds confusion when it's time to place your photos in their album (which we'll do in Chapters 4 and 5). Return to the Photo Browser to prune your collections of outdated photos.