From back in the day when I ran a UBB ( I mean way back), I had some Archive forums created in order to maintain good quality threads through the times of pruning (forum was pruned often to keep the site running well). Throughout the years, these "Archive" forums have remained and moderators would place good quality threads within them. In order to clean up the forums, I would like to move these thread back to their original forums, but fear what might happen with those thread in SERP's. How do we handle this?