Matra 550 Magic I is not all aspect missile but with much better capabilities than the Shafrir Mk IV (IAI Dagger A and MD A-4C Skyhawk) or Sidewinder AIM-9B (Argentine Navy MD A-4Q Skyhawk).
Matra 530 had IR or Radar guidance but it was designed for shotting down bombers so it was ineffective against fighters.
According to the Argentine Air Force only one AA missile was launch from one of its fighters.
On May 1st, a Shafrir Mk IV was launch from a IAI Dagger A against a Sea Harrier FRS1 and it missed the target
In all other air to air combats on that day no other launch had being made from an Argentine aircraft.