GPO settings aren't applied 100%

I'm developing a GPO that will set Audit Policies.

I've read a few things and have followed various suggestions from https://helpcenter.netwrix.com/Configure_IT_Infrastructure/Windows_Server/WS_Local_Policies.html
I *have* noted that Advanced Audit Policy Configuration \ System Audit Policies - Local Group Policy Object says:

When Advanced Audit Policy Configuration settings are used, the "Audit" Force audit policy subcategory settings (Windows Vista or later) to override audit policy category settings" policy setting under Local Policies \Security Options must also be enabled.

and have Enabled it in the GPO.

gpresult /scope:computer /r says the GPO has been applied.
And, I see that this one rerquired setting above is grayed out and Enabled.  That's what I might expect.
But the remaining settings in Advanced Audit Policy Configuration \ System Audit Policies - Local Group Policy Object are NOT set.
That's puzzling.

Any suggestions would be appreciated!

Just for reference, if there's a better way, all I really want to do is to "reasonably" replace the following script with a GPO:

auditpol /set /category:"Account Logon" /failure:enable /success:enable     
auditpol /set /category:"Account Management" /failure:enable /success:enable  
auditpol /set /category:"DS Access" /failure:enable /success:enable   
auditpol /set /category:"Logon/Logoff" /failure:enable /success:enable 
auditpol /set /category:"Object Access" /failure:enable /success:enable  
auditpol /set /category:"Policy Change" /failure:enable /success:enable   
auditpol /set /category:"Privilege Use" /failure:enable /success:enable   
auditpol /set /category:"Detailed Tracking" /failure:enable /success:enable 
auditpol /set /category:"System" /failure:enable /success:enable 
auditpol /set /subcategory:"Filtering Platform Connection"  /success:disable /failure:enable

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