Even though we are migrating Professional sellers to the new shipping settings, Amazon recommends you to do this yourself to understand the benefits of the new settings. For more information, see Take advantage of the new Shipping Settings.
Migrate your account
Click Take the Tour button at the top of the Shipping Settings page and watch the slide show to learn about the new settings.
After you finish the slide show, click Start Migration. Your default shipping settings will be copied over and the estimated migration time will display alongside.
Review your shipping template along with the international transit times. Depending on your shipping country, transit times for international delivery might be adjusted.
Click the Activate button. Activation can take up to a few hours if you have media SKUs in your account, however this will not impact the customers. Your current shipping settings will remain available until activation is complete.
Shipping overrides will not be migrated to the new shipping settings. See Migrate accounts with shipping overrides for more information.
Create, edit, or delete shipping templates
Assign SKUs to shipping templates