Agreed that it should parse any valid geographical coordinate, but, considering it’s a game/sim and not a real world gps, with a simulated world, terrain, coordinates, routes, positions and all the yadda yadda, I would still expect it to behave as any other piece of software. Heck even my BIOS needs updating though the processor’s architecture is the same. Anyway this, still i fully agree that parsing a route based on absolute coordinates shouldn’t depend on that. Don’t know how they innards work that the result is this.
Nevertheless back to the issue, I do still think that probably lacking updates but using current navdata breaks the links in BGL files (that’s what happened last time, just that last time it was an actual error in Navigraph navdata because the release was based on WU11 and when WU12 was installed it broke the BGL links, if I recall correctly).
Most probably that’s the issue here, or related to, and I would guess that the whole world navdata is linked, so even if the region you fly is updated, something elsewhere not and it breaks the route parsing.
So we agree that it shouldn’t work this way, not sure if it’s an actual bug or just the way it works (questionable, but still not sure if it should be called a bug)