Whether MSN23 was fitted with such a system (software/hardware) is immaterial - a first-flight schedule would not be checking/testing any such capability, that would either be in subsequent flights, or - more likely - subject to specific functionality testing onboard one of the 3 development aircraft prior to being cleared for series production embodiment.
I can't speak for the A400 and Airbus, but Douglas on the C-17 used brand new production aircraft to test, evaluate, and certify all sorts of changes. For example, the very first center wing tank equipped C-17 was a production aircraft straight off the production line. And that tank required new plumbing, valves, pumps, and new fuel management software unique to the centerwing tank. There were also changes to the flight control software. That airplane was also the first of the Block 13 production standard, which involved many other changes. It was all tested and certified on that first production aircraft and not T1, the single test aircraft. And T1 is now retired so ALL changes and mods are now tested and certified on production aircraft.