It is my opinion that neither Airfrance nor Airbus "really" want those recorders found - the lack of communication from our fleet office wrt this accident (the largest 330 operator in the world) just goes to reinforce what I and many of my colleagues consider somewhat of a conspiracy.
Surprising suppositions. Well almost.
Airbus should be keen on retrieving the things. The only way the manufacturer would not want the boxes to be found is if they already knew what the problem was and it has not so much to do with proboscii.
Air France on the other hand might benefit from the benefit of the doubt according to the legal guys. Doubt = minimum mea culpa.