I try to follow your advice, but if want to go from a point X to a point Y, I’m obliged to consult SimBrief to know the different SIDS and Star from where I have to pass on that path, if not, how do you want to know the various altitudes and roads to take ? therefore, I have to built a flight plan with Simbrief and after to transpose this plan in the MCDU of the A32NX. The problem is that if one SID or STAR is not in the listing of the MCDU, then obsolete, it is impossible to go further.