The aircraft can be totally shut down (except for power to the refuel panel) and no problem with refuelling to the required value.
It's hard to pick up from your question but guessing about pitch attitude, this is only needed if doing a drip from the magnetic sticks. If the aircraft does not have the bubble indicator near the refuelling panel the roll and pitch can be obtained from the CFDS before referring to the charts. In this case the ADIRUs will need to be aligned.