second or third post of this thread on the exporting from AHTE, importing/exporting from l3dt, and re importing to AHTE. 
Thanks Waffle, I haven't tried that program yet.
I noticed few things. The center point establishing the shadows in the large towns at A1, A22, etc seem to be missaligned. When approaching from the south south west, the shadows don't appear until you're near the center of the town and then they pop into view. No problem from the north. I'm using CM eye or an Fi156. Everything I checked at the small towns was okay.
Also, in CM eye, I am able to go under a few stone bridges at tank town but not all as I'm forced up into colliding with the upper portion. The same is true at the large towns in case that might matter later. In fact, when I skim the water while following the river in the large towns, I'm forced up into the stone bridges and at several points where there is no bridge along the way. In addition, when following the river in CM eye, I'm sometimes displaced slightly from one point of view to another, as if I hit something (when moving at a good clip.)
I'm hopeful that watercraft will be able to travel under all the bridges in the final release.
Also greebo, not sure I documented it, but typically you want only 1 , 1 mile object in a 4 mile square (Red Square). Right now I can not remember what happens if you have more.
It's too early for me to try this out but I'm wondering if I'll be able to build the massive cities I created in avachanl? Each tile was a mile square and there were around one hundred square miles in Paris alone.
Will that still be possible?