yeee-haaah!
I accidently put the wrong thumbnail on a listing last night. (item 370025244445). I realized it right away and revised it to show the correct image.
Now, the correct image shows within the listing BUT the wrong image still shows in the gallery view. I thought it might "re-index" over night but nope, my store still shows two pictures of the same painting!
I have confirmed that it shows this way on unrelated computers that wouldn't have anything in cookies.
This morning, I tried to delete the image altogether and did, however it still appears in the gallery view, with the correct image in the listing.
I will go to live help when available but would appreciate any ideas.