The auctions that are completed and having a bidder selected as winner but the winner did not claim the product yet are said to be processing auctions. These auctions will be found here. Navigate to Products > Auction Report , and select “Auctions Processing” tab to go to this section.
Here , you can deselect the bidder as winner. To do that, click “Cancel Bidder as Winner” button.
Deselcting the winner will make the product listed in “Recently Completed Auctions” tab.