GnuCash Not Happy With External File Renaming

[Ron Westfall]

Hi

GnuCash 2.6.12, MacOSX 10.10.5

I am a new user of GnuCash.  I have checked the documentation and FAQs, 
so my apologies if this issue is already known.

I created a new GnuCase file Foo.gnucash.  I then shut down GnuCash.  
Using MacOS's Finder, I renamed the file to Bar.gnucash. I then 
double-clicked on Bar.gnucash to open it.  Instead, GnuCash tries to 
open Foo.gnucash during startup (splash screen showing) and whines about 
it being missing ("The file file:///Users/Ron/Desktop/Foo.gnucash could 
not be found").  When I close the whine dialog window, I get an empty 
window with title Unsaved Book and two buttons Save and Close.  Close 
does nothing. Save shows a standard file save dialog.  If you provide a 
file name such as Gunk, an empty Gunk.gnucash file is saved.  Regardless 
of what you open next time, GnuCash attempts to open Gunk.gnucash.

The only way to open the renamed Bar.gnucash file is to make sure the 
last opened GnuCash file exists, let GnuCash open it and then explicitly 
open Bar.gnucash using File > Open.

As a new user I find this to be rather non-intuitive.  Is there a reason 
why GnuCash doesn't just open the double-clicked GnuCash file?  Is there 
a reason why it is so obsessed with the last opened file?

Ron