Once a listing is live, edits propagate the same way the original listing did — through the extension to Poshmark/Mercari/Vinted/Depop, and via API to eBay/Shopify.
How to edit
1. Open Crosslister, click the product. The product editor opens.
2. Make your changes — photos, title, description, price, condition.
3. Click Save. The badge per marketplace flips to Editing → Posted → Live, usually within a minute.
When edits don't go through
A few marketplaces don't allow editing every field after the fact. Poshmark can't change category. Vinted can't change package size. Closo will mark these fields as locked in the editor and tell you why.