Bulk populate Membership Ids

I've turned on membership ids but it seems they remain empty.  Is there any way to bulk populate existing subscribers?

Hello

Membership ID is generated automatically by the system for each subscriber. You can use this hidden tool for generating Membership ID

- Login to administrator area of your site
- Access to this URL domain.com/administrator/index.php?optio...nerate_membership_id

Replace domain.com/administrator in the link above by administrator URL of your site

Regards,

Tuan