I presume there’s no backup zip file on your server?
If there isn’t a backup file, (and nothing in your time machine history), I don’t know that you have much of an option other than to copy/paste and rebuild from scratch.
While I realize that this is probably the last thing you want to hear, a reminder to all who are running RW 7, be sure to check the ‘backup’ option so that you can easily get back your project file.
Since your running RW 7 if you have your publishing set to back-up the RW project file will be backed-up to your server. Just look at your publishing settings and press the button: