Hi Paul,
Did you install a later version of Radarbox after your crash? I’m pretty sure the latest version of the route database will have considerably fewer NJE C/Signs compared to earlier versions.
The reason many have been removed is because Netjet callsigns don’t relate to routes.
Every Netjet aircraft has its own fixed callsign consisting of NJE, then one number and two letters, - eg CS-DMP is NJE4AL, - and this will be used when a flight plan is submitted, irrespective of the route.
They do though sometimes also use randomly generated callsigns with three numbers and one letter - eg NJE287P which is still in the database, - but again these are not associated with a specific route.
Syd