Processing Unresolved Risks

I just ran a full scan on my Mac. Norton indicated 14 issues found. All of them were  located on the backup drive. The Virus scan results indicate they are all viruses (JS.Downloader x 4; Trojan.Gen.NPE x 3; JS.Nemucod x 5; Trojan.Gen.6 x 1; JS.Downloader.D x 2).

Virus scan results indicate that Norton cannot delete the items, cannot report them, and cannot quarantine them, so they appear in the Unresolved Risks window of Security History. 

I searched the file path indicated in the Unresolved Risks window to look for the files in the backup drive, and on the hard drive to see if I could locate the original offending downloads, but I could not find either. 

I tried to export all the items from Unresolved Risks to Quarantine, but the Export function does not work. I also could not print the list of Unresolved Risks.

4 questions:

  1. How can I delete these items or at least move them over to quarantine?
  2. Does placing the items in Unresolved Risks remove them from their previous location?
  3. Do items in the Unresolved Risks window continue to pose a threat?
  4. Why won't the Export and Print functions work?