I posted this in another discussion but it was marked as solved, so I thought I would post it as its own question about the Metafield deprecated value_type property.
In the reason (https://community.shopify.com/c/shopify-apis-and-sdks/getting-x-shopify-api-deprecated-reason-on-hitting-lt-shop-gt/m-p/1225694) it states that both fields are supported until 2021-10. Does that mean they are supported until October 1st, 2021 or they are supported until you update your API version to 2021-10?
Another question I have is what happens to the legacy metafields that still have the value_type property.
Do all of those metafields need to be deleted and re-created with the new type property?
OR
Will they all be converted to have the new type property and all of their values (ex: integer will change to number_integer) will be changed over to its corresponding type from this table (https://shopify.dev/apps/metafields/definitions/types) on a certain date?