I visited Lake St Lucia very recently. One morning we went for a cruise on the lake and I parked my vehicle near the shore of the lake and the Nuvi 500 was still on. It displayed as question " Do you want to switch to Marine mode?". Now since the Nuvi 500 is Marine capable (if you have the maps installed which I have not), I said "yes".

(Nuuskierige Agie) Big mistake. All my previous data were wiped ( Favourites, all of them and it reset the trip and max speed).
I know now not to answer "yes" again.
Is there a way to backup one's favourites once in a while?
Thanks for your answers in advance.