Hello Joseph! Welcome to the new forum.
Please make sure that you have updated the AIRAC data in the simulator using the latest beta client, then try generating and loading the route again. You can find the download link in the following thread: Release notes - Navigraph Navdata Client - beta 19
If you have already done that then I’ll need more details from you. What route are you generating? Please upload the exported file in your reply.
Regards,
Malte