Flight plans exported for XP11/12 from Charts 8 don’t list waypoints inside airways; only endpoints are included. However, using the previous Charts version, the flight plans included waypoints inside airways:
Flight plans exported for MSFS2020 do include all waypoints, as they should.
This problem is a very serious regression from the previous Charts Desktop for XP11/12 users.
I created a flight LEST–>LEVC using both Charts 7 and Charts 8, with autoroute, without SIDs nor STARs. The autogenerated route is LEST DCT FORNO UN733 ZMR UL155 NVS UM871 ABOSI DCT LEVC. And this is the route as shown in Charts 8 (with all the waypoints along the airways):