In the so-called "publisher's file" that I signed at the time there was no indication that I authorized the transfer of my data to other entities, not even the matrix of Jehovah's Witnesses or the so-called Governing Body.
Google translate of the Current? (Spanish) S-21 Form:
I hereby expressly consent to the inclusion of my personal data in a file owned by the Spanish entity "Jehovah's Witnesses". I give my unequivocal consent for my personal data to be transferred internationally to the Jehovah's Witnesses' ecclesiastical board known as the Governing Body of Jehovah's Witnesses, based in the US state of New York, as well as To other international entities linked to the world religious confession of the Jehovah's Witnesses. I am informed of my rights of access, rectification, cancellation and opposition that can be exercised before "Christian Witnesses of Jehovah", with address in Ajalvir (Madrid), Ctra. Torrejon-Ajalvir (M-108), km. 5, or sending an email to arco.es@jw.org.
https://drive.google.com/file/d/0BwqmWMK7dwtlN2sxYmVQeHFCOXM/view
I thought that the signing of the S-21 by publisher's was now considered not necessary which is why it has been removed from the English version (two elders reviewing with an individual about becoming an unbaptized publisher review how the card is used, and by the very action of submitting a S-4 they are deemed for that information to be used for a pastoral care etc etc)