...In my tinkering, I found that the number string you provided
at the end of the brackets appears to be "serialized" with each reg
file. I looked at other bottles and their respective reg files and all
of them had a different number at the end of the brackets...

I confirmed this at http://wiki.jswindle.com/index.php/Wine_Registry. The numbers at the end of the bracket are indeed a key timestamp, specific to each entry and is automatically generated when the file is saved and/or when the bottle is booted. Initially, when I used the number from what was provided, the second window never would come up. It wasn't until after leaving that blank, it provided its own number and the second window for configuration came up.

73 John