title: recreate_versions! using the unique filename method stated in the wiki
body: <p>I'm trying to use the <code>method recreate_versions!</code> but I'm using the method from the wiki to create unique filenames. The problem is that when I run <code>recreate_versions!</code> it changes the filenames but it doesn't update them on the mounted object itself. How could I refresh these URL's?</p>