FlyReal87 wrote on Apr 30^th, 2020 at 5:18pm:

when i create a flight plan with PFPX

PFPX flight plans/routes should be saved in the default P3Dv4 .PLN format, in Documents\Prepared v4 Files, and not in X:\Prepar3D v4\Captain_Sim\navigation\routes,
as PFPX saves the route in the older .RT format for the FSX 757/767, and not for the 767 II.

The best thing to do, is to save the PFPX route as a default P3Dv4 .PLN, then load it into the 767 II CDU - RTE page > SEND (LSK3L) > FLTSIM FPLS (LSK6R), then scroll through the pages until you find the route you saved, and select it to load it.