Guys, as a workaround you could save the FMS file directly in the A310's data directory, using the simBrief Downloader application. I have configured the simBrief Downloader to save files for the category "iniBuilds Flightplan" in the SIM-path YOURSIMDIRECTORY\Official\OneStore\microsoft-aircraft-a310-300\Data\FMS plans . Now, when you enter the desired city-pair on the INIT-page of your A310 FMS, it will find the flightplan and ask you if you want to use that one, or not.