Hi,
Here's the method commonly used with eBay's Revise Listing editor and Auctiva's <HTML> copy feature. This also works for Relists.
1. Update the Saved Listing at Auctiva with the replacement template. Check it with PREVIEW to make sure the template subsitution is visually correct and SAVE the change.
2. From the Saved Listings page, use the <HTML> icon to right on row for your saved listing to get/copy the HTML code. The pop-up box that appears has handy buttons to assist with the copy.
3. Edit your listing with eBay's Revise Listing editor. In eBay's revise listing editor, delete all the old code in the description section in HTML mode (you should see HTML type code in the box), except the Scrolling Gallery code, demarc with <!--ASW--> at the beginning and end. If you use ASW, the code is typically near top or bottom dependent on your placement (default is top).
4. Paste the new code to the description section. Note, it should position to replace old deleted code positional to ASW code.
5. Use PREVIEW to check your change before committing to the eBay revision (is it visually correct?).
I hope that helps.
Danno