Hi Haddon9,
Yes, now that you have changed the placement of the scrolling gallery in the "Edit Scrolling Gallery" section of your Auctiva account, any listings posted after that change was made will reflect the new scrolling gallery placement. However, the scrolling gallery will retain the same placement in your listings in which it was already present.
If you are re-posting your items from your Auctiva "Saved Listings" page, they will reflect the newly specified scrolling gallery placement, however, if you are relisting them using the "Relist" button on your "Closed Listings" page, the relisted items will reflect the same scrolling gallery placement as the original, unsold listing.
-Mike