Problem with statics solved.
Use RadMapCopy.
It lets you copy a rectangle of a map and statics from any OSI sized map to a different location on another OSI sized map.
ie it will copy to and from any combination of map0 old, map0 new, map2, map3 and map4.
The only confusion for me is that RadMapCopy insists that the map files be exactly the same name and number of bytes to the official OSI map.
http://ultima.lonet.cz/download_radstar.php.
Thanks for your interest Pierce and Yukiko.
The only reason for this thread was to put some map tool information in one place that might help someone else.
One interesting feature of using a bigger map (walkable from 0 to 6143) is that treasure maps can only go up to 5120. So I won't be putting any treasure maps or allowing cartography from the extended part.