Re: Kgs switching to Lbs
The CAD and VEMD have huge memories, only a fraction of which can be retrieved by post flight screen button pressing in either maintenance or config mode. The rest of the memory can only be accessed 'on the bench'.
The fuel quantity could have been switched from Kgs to Lbs via the config mode or by an internal fault. Either would have been recorded in the memory.
If it was an internal fault, we would have known about it by now via a service bulletin or possibly an AD.
Seeing as config can't be accessed in flight, a human switching would have had to have taken place before flight.