I can't explain how that would happen. It is like your site was reverted or restored from a backup. There is no way that I can determine what might have deleted or changed those files. It wouldn't be our extensions or even Dreamweaver that did it. We don't do any cleanup of email files, so they are never deleted by our extensions. It looks like your local backup has the latest versions, maybe you just have to upload them, but I'd be concerned other files on the sites were reverted to a previous version as well.