Hi there,
If you want to use the Meta Box on the same site instead of Pods, it is possible.
WordPress saves the post and custom fields in the database even you delete the post type or deactivate the plugin Pods. Just deactivate the plugin Pods and create a new post type by using MB Custom Post Type with the same post-type-slug.
For custom fields, you can create new fields with the same field ID and the corresponding field type of Meta Box to use the current field value of the post.
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