This works as well. It is maybe a little bit easier. What i do now most of the time if i want to save a flight, i copy all files from the cusomflight-folder and paste it in a folder together with my saved flight. If i now want to reload the flight i first load the normal saving file and then when it loaded i press esc and load the customflight.pln file for this file seperately. It is normally not shown, so you have to type in the hole file name in order to load it. After that, while still in the esc menu, i save the flight again and then continue the flight. Now everything should be working fine (maybe the flightplan needs a few seconds to load into the navigation system).