takata commented to A33Zab about the IR data.
Regardless of the IR data from ADIRU the ISIS data existed. And enough data was recorded that the BEA was able to follow altitude and attitude of the plane all the way down. What makes anybody think ISIS data was not presented in the cockpit?
If it wasn't ABI ought to be totally pilloried, if they did not make it available, or AF should be excoriated if they skipped over this as an "unnecessary frill option."