It wasn't in the wrong tanks, it was actually NOT THERE. Although it was indicated as being there.
Not quite, JT.
From the accident report:
There was no evidence to indicate that the fuel contents display system was operating incorrectly.
There was no usable fuel in the supply tank cells when the engines flamed out.
There was 76 kg (73 kg usable) of fuel in the main tank when the engines flamed out.