If you simply want to change the text under the heading SHIPPING, you only need to edit/type in the correction in the Description section using ebay's Revise listing. If you copy ALL the HTML code from Auctiva again, you would have two complete copies of the code at ebay, which you don't want to do for a simple text change.
I'm seeing the following text under SHIPPING in the Pink area at bottom:
Shipping will be recorded within 2 days. Usually, this will be delivered Next Day.
I assume that's the shipping info you want to update or revise. That is in the Description section, so just locate and do simple text change with ebay Revise listing (no HTML copy needed).
Danno