I think it is lite version for old device with lack of memory. I test on my Nuvi 765T on old version. If update JCV to full version is no free space on this device (mapupdater also thought and upload D30840X0A.JCV). But if copy manually D25040X0A.JCV to SD:
D30840X0A.JCV - absolutely the same pictures but there are not all of intersections in comparison with D25040X0A.JCV
So in this file is less number of intersections simply. It is my experience!
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