Check not actual ICAO's with Navigraph/Simbrief

Hello there,

Is there a way to auto-check against Navigraph/Simbrief ICAO’s if an ( old) ICAO still exists ?
The reason for my question is that in our Dutch KLM-VA NL we have, I assume 'older ’ assignment-routes with ICAO’s for example SNRJ,
wich are not actual anymore accoording to Simbrief and/or do not have Jeppesen charts anymore.

If there is that possibility, I can inform the KLM-VA webmanager, so he can perhaps keep the ICAO- list up to date.

Thanks for your response in advance,

Greetings, Erwin