Checkout extension app gets removed from Shopify editor after migration to new version

[rajasha]

Hi,

I had an app with some very old version(shopify.extension.toml):

type = "checkout_ui_extension"
name = "MyApp"

I wanted to upgrade it to a new version and therefore I set the following in shopify.extension.toml:

api_version = "2023-10"

[[extensions]]
type = "ui_extension"
name = "MyApp"
handle = "checkout-ui-extensions"

 When running npm run deploy I got the following warning:

Extension migrations can't be undone.
Your "checkout-ui-extensions" configuration has been updated. Migrating
gives you access to new features and won't impact the end user experience.
All previous extension versions will reflect this change.


Migrate "checkout-ui-extensions"?

> (y) Yes, confirm migration from "checkout_ui_extension"
(n) No, cancel

I selected Yes. But this removed the already placed MyApp from Shopify editor in the stores. How can I prevent this from happening?

Thanks.

[rajasha · Accepted solution]

Never mind, this worked fine. It's just that if you try to repeat the migration process multiple times then it doesn't work but works fine when migrating the first time.