Missing BackItUp disc in set of 9...still restore?

I think I must have accidentally overwritten one of my backup discs in the middle of the night in the dark, yet I completed the backup with no other problems. I am using BackItUp (Nero 6 Ultra Ed.), and the Restore only gets thru 3 of 9 discs before I have to cancel it.

Is there ANY way to create a dummy disc to fool BackItUp/Restore into thinking I have the missing disc 4?

Or possibly another way to workaround this problem?

any help… :bow: