Editor copy error in WinNC version 7.8.0.0 and some earlier versions.

I press Shift+F2 and create a new text file. I press F4 and ad in line 1 "testline1" and in line 2 "testline2". Then Ctrl+s in order to save the changes, and then closes the file. The text file is now called: "New Textfile.txt" Then I press F3 to see the file content and mark the text in line 2 and press Ctrl+c and the closes the file. Now I can insert the copied text in another text editor. So long so good. Now to the error: I press F2 and rename the file to "New Textfile.vba" Then I press F3 to see the file content and mark the text in line 1 and press Ctrl+c and the closes the file. When I tried to insert the copied text in another program, the text from line 1 has not been copied. I use many text-files with the extension .vba containing vba code from Microsoft files (word, excel and so on) and it would be nice to be able to open and copy the contents or some part of the contents when I need to. For the moment I have to rename this file type to .txt then mark the lines, copy them, and then rename the file back to .vba Hope you can solve this problem when you have the time.