Migrate legacy Flow extensions

If you have existing Flow extensions that were created through the Partner Dashboard, then you can import these extensions into your codebase. After you deploy the extensions that you’ve imported into Shopify CLI, Shopify CLI manages those extensions going forward.

A handle property is created in the extension's TOML configuration file after running the import command. Note that you can't change the handle property of the extensions that are present in your app's codebase after you've run the dev or deploy commands.