I getting ready to download the new software for my 798. When i go to save my way points onto a scan disk card i am not finding "EXPORT NAV DATA" as one of my choices in my navigation menu. I tried the cards in my 998 and i have the same results. Im hoping it is the cards.. one is a 16 gb scandisk hc card and the other is pny 4 gb premium video sdhc card. Any thoughts or suggestions on what i should do.? Normally i use a 2gb scandisk card and have no problems but i have software on them and dont want to erase them....