Trying to create a waypoint from KSFO to KSAN using the route - OFFSH1 MCKEY LAX COMIX2. After loading the OFFSH1 SID the flight plan gets erased from the planning window. If I continue with the planning (even though I can no longer see the waypoints and route on the map) and try to verify the plan, I get the message "Unable to verify an empty flight plan."
This happens regardless of departure runway choice.