You are looking at a feature called UAC Virtualization
, this blog posting gives a pretty good rundown on what is happening and where the files are located.
From above article:
For example, if an application attempts to write to C:\Program Files\Contoso\Settings.ini, and the user does not have permissions to write to that directory (the Program Files), the write operation will be redirected to C:\Users\Username\AppData\Local\VirtualStore\Program Files\Contoso\settings.ini. If an application attempts to write to HKEY_LOCAL_MACHINE\Software\Contoso\ in the registry, it will automatically be redirected to HKEY_CURRENT_USER\Software\Classes\VirtualStore\MACHINE\Software\Contoso or HKEY_USERS\UserSID_Classes\VirtualStore\Machine\Software\Contoso.
so in your case if you are trying to find the files you need to look in:
C:\Users\Username\AppData\Local\VirtualStore\Program Files\IronDuke\