Is FAR 15.503(b) Postaward Notice of Award still required after Corrective Action?

Say an agency sent out FAR 15.503(B ) Postaward Notice of Award letters to unsuccessful offerors. Written debriefings were provided to all of them. After a protest was filed, the agency decided to take Corrective Action. The Corrective Action involved reevaluating the proposals. While it was reevaluating the proposals, the agency did not "terminate" the original contract award to the original awardee, but rather, "suspended" their contract and did not allow them to work.

Now the agency has completed its new reevaluation. The same awardee from the initial evaluation is also the awardee after Corrective Action. Must the agency send "new" FAR 15.503(B ) Postaward Notice of Award letters to ALL the unsuccesful offerors? Can the agency send the Notice of Award letters to ONLY the unsuccessful offeror that protested last time? Technically, this is not a "new" award in the sense that, there is no new contract being awarded, but rather, the contract with the original awardee, which was "suspended," will now be "unsuspended" so the contractor can start performing the work.