Old preamble
Unfortunately there’s an arbitrary reply limit on the G1000 Flight Plan importing stuck thread (why? I’m trying to report debug data to help you…)
Adding my reply that would have gone there to here @skysail:
Here’s a different flight plan that imports… but doesn’t “connect”. Same experience described above. Once it’s imported, the FMS is totally busted until a sim restart - resetting/reloading the flight, updating the flight plan: nothing, the FMS is stuck and won’t reflect updates in the map (or allow enabling nav mode) until sim restart:
KPLN/32 N0479F450 DCT IGSEB DCT ALB NELIE3 KISP/24
An interesting commonality in my broken flight plans is the NELIE waypoint.