Cannot see the Newsletter I sent already

I sent a newsletter some time ago and I would like to resend it but when I press on Newsletters -> Edit (on the newsletter I am interested in) the system says "Cheating Huh?" I suppose this is so that I am not allowed to change a newsletter that has already been sent but I can not figure out any other way to actually look at a newsletter I sent in the past or modify it and save it as a new one. Please suggest, thanks! PS I am the super admin and admin on this site.