Unfortunately there is no way in your Auctiva account to save an already active listing while it remains active. If you made the listings in Auctiva, you should have saved listings which will remain intact in your Auctiva account. For listings that were not created and posted via Auctiva you would need to wait for the items to close on eBay and then import them from the Closed Listings page of your Auctiva account into your Saved Listings within 90 days of them closing. The Closed Listings page references eBay and eBay only stores listing data for 90 days after the items end, so the data would need to be imported prior to that time for us to be able to save it.
If you have specific questions about that process or encounter any difficulty, please feel free to file a support case from under the Help tab of the site and we'll be happy to assist you further.