I bought a Lowrance Elite 9Ti late last year and am about to start using it. It came with CMAP Insight PRO. This is the confusing part. It has a mini sd card for cmap in the slot. Does this have to stay in the unit to utilize the mapping or does it come built into the unit? I can take the card out and it seems like all the data is still there. Maybe it's saved in memory? I was playing with downloading community maps from the CMAP Genesis social maps this evening and I have to remove the Insight Pro card to put in my card with the social maps.