Hi Fix I.T - If I understand correctly, you have created a revised listing, with a template, and are trying to figure out how to get it to apply to your active ebay listing. The new Auctiva listing will not transfer automatically - it is not "hot-linked". You will have to manually transfer the new HTML.
When you wish to make changes within the template area of the active listing(description, seller details, pictures, or the template itself), you can copy and paste the HTML from your revised listing in Auctiva to your active listing in eBay as follows:
1) Locate your listing in your Saved Listings folder in Auctiva, open it, make any necessary changes, preview, and save.
2) On your Saved Listings page, click the <HTML> icon to the right of your listing.
3) Select all of the HTML in the popup window and copy it.
4) Locate the item on eBay and click the "Revise your item" link.
5) Click the "HTML" tab above the Description box.
6) Select all of the HTML that's there, paste the copied HTML in its place, and save your changes.
Keep in mind that the HTML copy & paste described above only applies to the template area. If you wish to revise items outside the template (title, category, price, etc.), you need to do that directly from the ebay "revise your listing" page.
Hope this gets you on your way.