Even on a commercial aircraft the fuel management system can be used to balance out both wings of an aircraft. I've used the system in a flight simulator in which there was a simulated fuel leakage in a Airbus aircraft, in order to land the aircraft had to keep pumping fuel from one wing to the other one so the aircraft could be leveled for a smooth landing.
On the bottom of the left MFD of the JF-17 it's showing two gauges which depict Left/Right side fuel status. Had a identical display on the Airbus simulator for balancing the wing loads and could toggle a pump to distribute fuel weight.
Since most modern aircraft are designed unstable, its the job of the FBW to continuously manage the aircraft without pilot input in order to fly it straight. Look at the picture below. One wing has a C-802 which is ~750KG, on the other wing it is carrying a 800litre fuel tank to balance it out. The aircraft fuel management system and FBW will have to work together. If missile not fired the aircraft computer will manage fuel via pumps so that the the opposite wing has similar weight. Once missile fired, the fuel management system will pump out fuel from the wing with the tank and balance rest of the aircraft.
Same goes for if they want to carry a single Raad which is 1100Kg, JF-17 loadout options show it can carry a 1100litre fuel tank on opposite wing corresponding hard point.
Then again these are loading options. If the Raad-2 is sleeker than Raad-1 as I've observed from pictures than the JF-17 can simply carry it on the center pylon without worry of landing gear clearance and this complicated mechanism can be avoided. However the JF-17 being a advanced aircraft this whole system is likely normally automated to reduce pilot load.
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