Adding definition to metafields without a definition

[domarenon]

Hello!

I have these metafields without definitions generated from different apps, but now I would like to convert those that start with "product" (e.g., product.additional_image) to metafields with definitions. I see there is a button that could do that, but before doing this, I would like to be sure that it will not change the structure of the metafield (e.g., product.metafields.product.additional_image) because we already use those metafields to display that information in our store.

I would like to do this because I plan to stop paying for this app, and I don't want to lose all the data in the product metafields by just converting them to my custom metafields.