Flying at EGLL that has both ILS and RNAV approaches. I understand that FSIPANEL selects the ILS approach and that can be changed in the flight plan , to the RNAV approach, before you take control of the Aircraft. Then you fly the RNAV approach and land. You then want to do the same approach again. When you move the aircraft in FSIPANEL, it selects the ILS approach and you have to redo the RNAV approach and also the performance settings.
I understand this is a minor inconvenience, compared to the benefits of this program, but am I doing something wrong that FSIPANEL operates this way?