Thanks for contributing to our forum. We do not currently offer functionality that would allow you to create Inventory data from active eBay listings nor move existing into the Auctiva Inventory system, so you would need to post your items through Auctiva to track them in our Inventory system.
Once you have added the details of a product in the Inventory system from under the “eBay Sales” tab within your account, you can link your listings for that product to that Inventory Item while creating them by checking the “Is this an inventory item?” box under the description editor and selecting the product in question.
If you would like to learn more about our Inventory system, I also recommend checking out the tutorials in the “Inventory” section on the following page of our site: http://www.auctiva.com/help/tutorials.aspx
I hope this helps. If you need any further assistance with your account, please feel free to contact our Customer Support team by mousing over the “Help” tab and selecting the “File Support Case” option.