How to use Find and Replace to remove eBay SEO from listings
Back up your listing descriptions before you continue:
Navigate to Insights → Report Center → Custom Report
Choose Listings - from eBay as the Report Type.
Choose Item ID and Description for Fields,
If any unwanted changes, upload the CSV to the "Update Listings" CSV feature in Listings Manager → CSV Import.
Use the code below for each SEO type in the Find field. If removing multiple, run Find and Replace separately for each.
Mobile Description:
<div id="tds-mobile-description[\s\S]*?<\/div>
Keywords:
<meta name="keywords" content="[\s\S]*?">
Description:
<meta name="description" content="[\s\S]*?">
In the Find and Replace settings, enable the following options:
Find in: Description (SEO is code hidden in your eBay Description)
PHP Regex