I was under the impression developed acreage to a nation would not count if the port changed ownership and the new owners would start out with the initial 20K acreage.
If the port was retaken by the original developers, the developed acreage would again show and be usable.
We have just been given the opportunity to see if this holds true with change of ownership in Pania however, total acreage is still more than double than the original allotment of 20K acreage.
Was I mistaken in my assumption ? This is rather important to clear up if a nation was negotiating to sell or buy a port.