Hi Batfish,
Welcome to Auctiva!
All of your listings that are active on eBay at any given time should show up in both your Auctiva store and eBay store. If your active eBay listing are not showing up in your Auctiva store, please contact our customer support team and we should be able to help you out with that.
If your active listings are not showing up in your eBay store, I recommend contacting eBay's customer support so they can look into why your listings are not showing up there.
You can contact our customer support team using the web form on the following page: http://www.auctiva.com/help/requesthelp.aspx
-Mike