Originally Posted by BlueLghtning
But, I thought the entire reason the 378 did that is because the "internal" map was a weird contraption of the waterways mixed in with the road maps and you could never get the map on the PC to match so it always tried to re-calc because of that?
I'm not entirely sure, but if this process replaces the internal saved maps on the 378 that were causing the issue to the type of maps that are on the 478, it makes me think it could work. I'm totally guessing here though.
That's my thoughts will update once I try it. I know that with maps on a external card and internal maps turned off the recalc problem goes away.