Garmin devices never overwrite the log files when a cartridge is re-started. WhereYouGo does...
It would be nice if WhereYouGo would not overwrite an existing log file. More sophisticated would be to be able to choose "Overwrite log files yes/no" in the app settings but in any case - "not overwrite" should be the default behaviour.
It's really a pity when one re-starts a crashed cartridge and the crash log is lost at the same time.