Replacing the SD card

[Eduardo Hrovatin]

Hi fellows I am writing from Argentina, I bought a Raymarine Dragonfly 7 pro with C Map SD Cards and I wondered how can I use an high capacity SD card in order to preserve the original one as well as being able to store pictures while I do navigate and fishing.
I have tried different methods and I was not able to succeed. When I remove the original card all detailed data of the map disappear from the display …. There is any procedure to be able to perform such change and navigate having all detailed information and maps together within a SD card of 32 Gb?
Thank in advance and best regard,
Eduardo