Hi Stephen,
I tried using your routes file, it would not load using the "Auto" data link function but it would load if I used the CO routes key. What I have since discovered is that if I deleted the ADN and P18 waypoints it would load correctly using the data link. I then tried flight plans from EGCC to EGPD and EGKK to EGCC and they worked perfectly without making any changes to the PFPX generated route. It must be something peculiar to runway 16 departures from EGPD.
Once again, thanks for your help.
Graeme