Please explain what you mean by "cannot trace the file extensions for those files". What does that mean. ANSWER You asked me to provide you with the file extensions. I replied that I couldn't find them and still can't. What is .FTW if not a file extension?
Could this, my latest contribution give you enough to be going on with? It seems that the answer to all my difficulties is contained in what happened AFTER the Macdoanld tree was created and when I tried to "manually hand enter" the Scott data. I say "tried" but of course I succeeded. My problem is that I cannot find a way to display it.
If you read the three articles that I suggested that you read, you SHOULD be able to SEE ALL 3 Character file extension on every file on your computer with Windows Explorer.
If you Right Click on the Start Button, at the bottom of your computer screen, do you see Explore? If you click on that, do you see a list of Tiles WITH their 3 Character File Extensions?