I think this has happened to me too Ron--like I'd list a white wallet, but at the top of the auction where there's a 'promo' line above the "Description" gif, there'd be the leftover line from the past auction, like Black Plaid Scarf. I think I finally just stopped using Sell Similar. I too was going in & revising each & every auction when I felt like it--there were times when I didn't & it didn't matter--didn't get any bids anyway!
But do post if you found a resolution, as I'd like to know!