I loaded waypoints from Humminbird PC to a SD card. With the 798 on a 12 power supply and with no transducer attatched, the 798 would load the waypoints, but the unit when power cycled would lose them. I also noticed that it would lose the advanced user/normal user setting and the time zone setting (probably other settings as well).

I then installed the unit on the boat with transducer attatched and all saved as I assumed it should. Is this normal, or is there something I should do to as it boots up without the transducer such as select normal mode?