Ok, I went ahead and redid the railroads in Louisiana/southern Mississippi per the goverment RR maps of civil war Louisiana here
http://memory.loc.gov/cgi-bin/map_item.pl.
The image at the bottom shows the changes.
Railroad from Opelousas, La to Baton Rouge, La removed.
Railroad from Baton Rouge to Springfield, La and Clinton, Ms removed.
Railroad from Clinton, Ms to Bell, MS removed.
Railroad added from Opelousas, La to Vermillion, La to Berwick, La.
I have added translinks from Opelousas to Vermillion, La to Berwick, La.
I have removed translinks matching the removed railroads.
Actually the railroad from Tx to Opelousas goes to Vermillion instead of Opelousas. However in terms of game play, there is no difference so I didn't change the graphics.
On the image below, red indicates removed rails. I forgot to put a red line for the removed railroad from Baton Rouge to Clinton, Ms. White indicates added rails. Blue indicates where the actual path of the railroad from Tx to Vermillion. The yellow indicates a railroad that should be removed. But again, creating the blue railroad and removing the yellow railroad has no impact on gameplay and so I left it alone.
Gary, if you want to test the changes and confirm the changes, it may save you some work.