Forgot to turn off flight logging so ended up with my drive home recorded on the flight log.
To edit the drive out of the log, I exported to a gpx file, opened in Notepad and deleted the segments relating to the drive. That leaves me with a clean gpx file which displays the correct flight log when I import it back in to SD.
How do I save this as a SD flightlog? I tried renaming the .gpx as a .flightlog file and saving in the skydemon/logs folder, but it doesn't work. Couldn't find any 'save log file' functionality to put a .flightlog file in to the skydemon/logs folder.