Kaedyns,
If you look on your closed listings page on Auctiva:
http://www.auctiva.com/listings/ended.aspx
You can select any of your closed eBay listings and import them into Auctiva. You can pick and choose which listings to import by using the checkbox on that page and then hitting the "Import Listings" button.
Once you have imported, the listings will now show up on your "saved listings" page within Auctiva:
http://www.auctiva.com/listings/saved.aspx
Your images will also be imported.
Hope this helps,
-Kevin