Hi RVA, I would assume so. They probably update the database to reflect the Citizenship status and then to propagate that through the system they use the stand Replacement Card process.
That would bring all the other linked systems into line. Such things as the e-verify etc.
When I went to update my status, SS Bureau did ask me if I want new card or if I still have my old card. I replied that I still have my old card. So She said no need of sending me new card as the information is same.
She concluded that she will only update my record and no other paper work will be done.
I hope will clarify the subject.