Here are the settings.
The sequence is normal,
1. turned on the ground power
2. called the tanker
3. On the offer to start refueling, I enter the amount of fuel in the FMC or in the EFB, it makes no difference.
This is related to this. I have rechecked repeatedly. If you enter a small amount of fuel, 10,000 kg. or 90,000 kg. then refueling is normal. If you enter 100% of the amount of fuel, then the tanker is always on top of the wing. This happens with all PMDG aircraft. There is no such thing with airbuses.
With respect.