Fuel flow does not change in the Flightplan

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When planning I noticed some aircraft on low fuel, so I wanted to tweak the generated flightplan but the fuel flow does not change in the flightplan.
The aircraft is in this case a F-16MLU and according to the DB the fuel flow should (of course) change per altitude.

F-16MLU fuel flow.jpg (73.54 KiB) Viewed 54 times

Below I made some print-screens for a F-16MLU and another F15C flightplan.
I changed the altitudes and there is no change. The fuel flow does change if the speed is altered!

Am I forgetting an apply or next button or is there a little hickup?
Or maybe CMO has invented something to prevent the high fuel prices
See below:

Operation Allied Force Campaign_fuel flow.zip

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