OK amateurs. LOL
To update your SSN record to establish U.S. citizenship take your driver's license or state ID card and naturalization certificate or U.S. passport to an SSA office.
If you already have an unrestricted SSN card you really only need to update the CSP code on the SSN record to an "A", but chances are they won't suppress the card and you will be issued another unrestricted SSN card.
You are now only allowed 10 SSN cards in your lifetime, so I think that should do you whether they do or do not count that one. Once you get the card call the SSA 800 number to review your record to make sure the CSP code is now an "A".
https://s044a90.ssa.gov/apps10/poms.nsf/lnx/0100203300 RM 00203.300 Who Must Submit Evidence of U.S. Citizenship for an SSN Card
They should not need to verify that you are now a U.S. citizen.
https://s044a90.ssa.gov/apps10/poms.nsf/lnx/0100203310 RM 00203.310 Evidence of U.S. Citizenship for an SSN Card
C. Procedure -- Examining and Verifying the Document Submitted as Evidence of Citizenship
a. U.S. Passport
If the document appears to be authentic based on the visual examination, continue processing the SS-5
a. Certificate of Naturalization or Citizenship Appears to Be Authentic
If the document appears to be authentic based on the visual examination, continue processing the SS-5.
While SSA employees should NOT routinely query SAVE online to verify a Certificate of Naturalization or a Certificate of Citizenship when the document appears authentic based on the visual examination, there may be situations when an applicant submits a Certificate of Naturalization or a Certificate of Citizenship which appears authentic and it is desirable to query SAVE to verify the document and confirm U.S. citizenship for enumeration purposes. Generally, accept a Certificate of Naturalization or Certificate of Citizenship as evidence establishing U.S. citizenship when it appears authentic when examined under both natural and black light and using the security guidelines in SSA’s ACM.