Wrong Tree, Barking
In common with most large aircraft, by design the A400M fuel system keeps as much fuel as far outboard as possible all the time for wing bending moment relief. As fuel is used from the feed tanks, they are topped up from the centre and transfer tanks in that order. (There is a slight modification to this in a tactical fuel loading mode which I won't describe here - but that's not important right now.)
The aircraft fuel system does not take orders from the engine ECUs. If there is a parameter labelled "trim" or "fuel trim" in the ECU data, it relates to engine fuel control, not the aircraft fuel system.