apply_filters( 'cloudinary_migrate_legacy_meta', $attachment_id ) → {array}
    Filter the meta if not found, in order to migrate from a legacy plugin.
    Parameters:
| Name | Type | Description | 
|---|---|---|
$attachment_id | 
            
            int | The attachment ID. | 
- Since:
 - 2.7.5
 
- Source:
 
Returns:
- Type
 - array