I attempted to clean the ones I restored, but Avast failed to do so,
That was one of the reasons why i posted the link to "Clean, Quarantine, or Delete" as it explain how and what can be cleaned!
[b]Clean[/b]: attempts to remove the infection from the file. This is only pertinent to virus behavior, wherein a legitimate file has been 'infected' with non-legitimate (usually viral) code.
On the other hand, antivirus software can't 'clean' a worm or a trojan, because there is nothing to clean - the entire file IS the worm or trojan.