I haven't even tried yet, but how would you go about copying your copies? The copies I've made I think are all made from iso images.
raywm3, You can use DVDDecrypter> Mode>iso>read and it will put the file on the HD or whereever you put it . Then after reading > Mode> iso>write> click on the .mds file ( there will be 2 files when DVDDecrypter reads the disk an image file and a .mds file))> new click on the decrypt button and it will write to the DVD. You can also use Imgburn to do the burn also
If you already have a copy, couldn't you use something like Alcohol to do a 1:1 immediate backup? In fact, I know you could. But I wouldn't I'd do the the Decryptor way. If you use the "temp" method, too many potential errors could occur.
you could use Nero on the fly but I don't like doing that! and you could use Blindwrite from VSO...... good program! There are many things you can do. I would copy to temp folder first then write to disk using Nero or Blindwrite! other programs are RecordNow by Sonic, Intervideo DVDCopy4, and I think you can even do it with DVD-RB in ISO backup then burn ISO!