LOL! um... If you're asking why there isn't a DVD9 to DVD9 guide, which is what I think you're asking, it's because it's such a simple process: 1) Rip to HD w/ DVD Decrypter in ISO>Read mode. 2) Burn to DL disk with DVDD in ISO>Write mode.
ummmm you can use dvd decrypter in the iso read, iso write mode. Most apps will do this without a problem.Dvd shrink nero Intervideo dvd copy3 etc.