I have a Nuvi 2595LMT with a 32GB SD card, and a Nuvi 2597LMT with a 4GB SD card. The SD cards are required in order to update the maps (newer maps require more memory than what's on the base units). I'm getting rid of the 2595LMT, and I'd like to swap it's 32GB SD card with the 4GB card in Nuvi 2597LM. Can I simply swap the cards or do I need to copy the data on each card to the other card, or is a swap not possible at this point? Thanks for any advice.