How do I use fuel from drop tanks?

[Rabbisaur]

When I rearmed with center 800 tank. I took off but then I looked at the fuel page in MFD. I was using internal fuel. Not using any fuel from the drop tank.

 

Anyone knows why?

[Rabbisaur]

BTW, I damaged central pylon in the previous flight. But I repaired it after landing.

[Surrexen]

You might need to update the DTC cartridge via ground crew and then reload the DTC information. Try that out and see if it fixes it.

[LJQCN101]

There's a bug that it won't repair external fuel transfer pump. Fixed internally.