Just start PF3. It will detect the PF3 save file, and a popup will appear and tell you everything

(something like start the sim, load the saved state, pause the sim, connect PF3 to sim, unpause, wait a bit until PF3 contacts you by itself)
You shouldn't forget to mention that it only works when the PF3 process was killed in the Windows Task Manager instead of closing PF3 regularly. Otherwise the saved restart data would get lost - if I understood that correctly.
I wished we could have a more user friendly way of restarting a PF3-flight.
Maybe instead of deleting the saved restart data on closing PF3, save them connected to the flightplan and then when the same flightplan is opened again offer the option to continue with the saved restart data.
In respect of the never ending OOM-story restarting a flight is necessary sometimes.
I assume it is somewhere on the list ...
