To inspect the three hidden backups created by Initial Setup, I tried these File Finder specifications:
Files to find: Entries.reg
Search in: C:\Program Files\Macecraft\V\jv16 PowerTools X\4.0.0.1486\Backups\
Search by contents: __SystemRecovery
The search results window showed "(No files found)".
I tried again using Search by contents: Windows Registry Editor Version 5.00.
The search results window again showed "(No files found)".
I did the same searches with jv16 PowerTools 2012 and jv16 PowerTools 2014. In both, the expected files listed in the results window.