MSFS export: Missing airport information for some waypoints

[HobAnagerik]

Windows 10 20H2 x64

Microsoft Flight Simulator

AIRAC 2101 rev.1

GNS530 mod
https://forums.flightsimulator.com/t/gns530-mod/296598

Exporting a flight plan to MSFS format, and loading that plan into the Garmin 530 with the GNS530 mod causes a CTD for some waypoints. The mod allows a plan file on disk, with the right file name to be loaded into the 530 via a catalogue page.

There is missing information in the plan file.

For example, ALLDE:

It has an airport listed, KMTN, but this does not appear in the exported plan file:

    <ATCWaypoint id="ALLDE">
        <ATCWaypointType>Intersection</ATCWaypointType>
        <WorldPosition>N39° 23' 47.00",W76° 30' 39.58",+002500.00</WorldPosition>
        <ICAO>
            <ICAORegion>K6</ICAORegion>
            <ICAOIdent>ALLDE</ICAOIdent>
        </ICAO>
    </ATCWaypoint>

If you edit the plan file to include the missing line, it works:

    <ATCWaypoint id="ALLDE">
        <ATCWaypointType>Intersection</ATCWaypointType>
        <WorldPosition>N39° 23' 47.00",W76° 30' 39.59",+004000.00</WorldPosition>
        <ICAO>
            <ICAORegion>K6</ICAORegion>
            <ICAOIdent>ALLDE</ICAOIdent>
            <ICAOAirport>KMTN</ICAOAirport>
        </ICAO>
    </ATCWaypoint>

Some waypoints differ depending on whether you have Navigraph loaded or not. For example. JANNS:

Without Navigraph:

With Navigraph:

If you load this plan into the 530 without Navigraph data loaded, it will work. If you have Navigraph data, it will crash the sim.

An additional side effect of this missing information is on the map screen. When loading the plan there, which does work, it converts the waypoints with missing data into user waypoints, with just a GPS co-ordinate. They also do not appear on the route at the top of the screen, i.e. ALLDE would be missing, and you will not see the waypoint in the map, just the course change.

If you add the missing information, ALLDE will appear on the map, and the route.