DuelFuel allows you to load fuel from one module, while unloading it to another module at the same time.
This is just a recomplile of the good old dependable FuelMFD by Trevor Johns. Copy the file to the Plugin folder of your orbiter application. And active it on the modules tab of Orbier LuanchPad.
It will then show as "FuelManagemet 2" on the selections menu.