Hi…,
Welcome
Please see Do I need SimBrief fo Flght Planning? - #2 by Ian.
You can export flight plans from both Navigraph Charts to many flight sims and addon aircraft using Export . Similarly, you can export from SimBrief to many flight sims and addon aircraft after you Generate your OFP. You can use the Export flight plans option each time, or better take a little extra time to set up SimBrief Downloader to automatically export these.
You import flight plans into your aircraft depending on which aircraft and flight sim. Please advise which and we can assist.
Cheers
Ian