merging backups

  soccess 14:47 06 Sep 07
Locked

I have made a series of backups over the last two years(using backup4all) onto dvds and onto an external disc. some of my files only exist in one backup, others like mp3s and jpgs, exist multiple times. I want to eliminate the duplication by creating one new backup which combines all of the contents of my previous backups but which will contain only one copy of each document, mp3 and photo.
Can anyone offer advice as to how to do this?
Thanks in advance.

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