Yes, when the "Append Auctiva Scrolling Gallery to my listings" setting is enabled in your account, and you create listings directly through eBay, the scrolling gallery will automatically be appended to those listings within a few hours of when they are posted. Believe it or not, most of our customers use Auctiva only for the scrolling gallery, so the auto-append feature is a must.
If you would like to remove the scrolling gallery from your listing to which it has already been added, you can do so by deleting the scrolling gallery HTML from your description HTML using eBay's "Revise your Item" form. The specific HTML you'll want to remove begins with <!--ASW--> and ends with <!--ASW-->.
Any additional questions or concerns? Please file a support request using the appropriate link on our help page: http://www.auctiva.com/free-auction-software-help/help.aspx