You can simply revise your active listings by select “Revise Listing” form the “More” button in the toolbar. Please see the help here:
https://manual.iwascoding.com/gs7/en/Listings_Section-Revising_Listings.html
A video tutorial is available, too.
Before invoking the revise command you might want to check our overview page where you find all info regarding the changes and provide you with instructions what might be needed to do to make your active listings compliant to eBay policies.
Please visit the “How to make your listings ready for eBay’s new policies” page here:
Regards, Kristian