Changing the number of the downloaded disc

[Ramblin]

I have imported all 880 of my Karaoke discs. Some of them I wish to change the number of. For instance, some discs were given to me to import so that the customer wouldn't have to bring their discs to each show. Since those discs are not in my inventory, I would like to go back and change the number so I will know I don't have them. The numbers I have assigned to those discs are my book numbers. Not ones that Hoster assigned. Is it possible to change the numbers once they are imported, or do I have to delete them and re-import them. I would have to get their discs again to do that. Thanks for the help