And as far as I can tell it has nothing to do with .SGU vs .MGU. Here is a simple test I just did,

1) open BIAB
2) keep the styles that are loaded (prolly from your last use)
3) leave the C in the first bar
4) Save As YourFilename
5) add one more chord anywhere on the screen
6) quit BIAB
7) as you would expect, it prompts to see if you wish to save
8) say Yes

at this point, any standard Windows program will save the file using the name you used previously in your SaveAs in step #4 above and exit the program.

BUT BIAB instead pops up the SaveAs dialog and if you attempt the save with the same name it then warns you about overwriting, which is, of course, what Save should do and exactly what you wanted it to do!

Last edited by JohnJohnJohn; 06/02/15 09:56 PM.