I have just purchased a Nuvi 2797LMT, after owning a Nuvi 855 for more than 3 years.
I wanted to transfer all my POIs from the 855 to the 2797LMT so I copied the Custom POI GPI file from the POI directory of the 855 to the 2797LMT. I also copied all POI GPX files from the GPX directory of the 855 to the 2797LMT. This transferred most of my custom POIs however the POIs in my "Favourites" App and "Address Book" App weren't transferred. I'm not sure whereabouts these POIs are saved on the Nuvi 855 as there don't appear to be any POI format files in any of the remaining directories on the Nuvi 855 unit. Is anyone able to help me please?