You are able to individually edit your published, ready to publish, and needs review listings within the eBay channel. Doing so offers the ability to use a separate eBay listing description than what you have available for your Shopify product description.
1. Access Listings, then choose published, ready to publish, need review, or failed to publish.
2. Then select the listing title.
3. Select whether or not to use the Shopify title or description or a custom eBay title or description.
4. If you've chosen the custom option, enter the custom detail values.
If you've chosen to use a custom title or description, this will not affect your Shopify title or descriptions and will be used only for the eBay listings.
Other values that may be edited include eBay inventory, eBay pricing, weight, and barcode.
Once the updates are complete, select Save & Revise if the listing is already published to eBay or Save & Publish if it has yet to be published.