Would it be of interest to the west to recover the missile ? I presume we know exactly where the aircraft was along with speed and heading so calculating a search area ought to be possible. Finding it in that area is a totally different matter.
Not sure why. There are plenty of sources to acquire an intact working Aphid or Atoll for trials of flares etc, and it's not as if they're in the same class as AMRAAM or Meteor.