This is really annoying!!!
I have noticed the F-16C's external tanks, both wing and centerline, to not refuel while selecting the new fuel state in the ground service panel.
The only way around this is deload the tanks off the aircraft, and reload them back onto the aircraft having to use the ground panel 2 times.
Is this a bug or intentional? I personally don't feel the fuel slider should only be connected to the fuel state in the external tanks.
Thanks