nüvi® 2797LMT Supports JCV
Lane assist with junction view (displays junction signs)
Example Europe JCV:
The screen shot below shows both the Nuvi 2595 (5") and the Drivesmart 66 (6.5") use the same JCV files.
Spoiler: Same JCV files
The question then is where did you get the JCV file for the nüvi® 2797LMT?
If you used Garmin Express to update both Nuvi's the nuvi 2597 and the nuvi 2797 then it should work.
You can always re-download the maps to the nuvi 2797 over again there could of been some hick up the first time.
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