Well it's about time you got back Karl!. lol. You went MIA for a long time. lol. But nice you see your return to the RTMM/MFC air!.
Eutsuk Airstrip is not a registered airstrip in your sim and does not have a a valid ICAO that can be seen identified in your sim airport listing.
In that flight plan, the Eureka location was not used in the route of that flight plan so your sim doesn't see as a route point.
Eutsuk Airstrip is located at N53° 17' 56 W126° 49' 13.67"
You can get to it by using that lat/long in your GPS.
(Refer to the FAQ: GPS: LINK:
https://return.mistymoorings.com/faq/#g).
I have added Eureka as a waypoint on a FP for you so easy navigation to get to it. It will now bee seen as a way point location but is still not identified as a valid ICAO in your sim.
Norm