No, manually linked listings will not be overwritten.
If you’ve manually linked listings with different SKUs to the same product, Sellbrite will preserve those links. For example, if you linked 5 listings to a single product manually, that relationship remains intact.
When you import listings and select the option to create products, Sellbrite will Skip manually linked listings. These listings won’t be used to create new products because they’re already linked to an existing product. This ensures that your manual link relationships are maintained and not disrupted by future imports.