Deploying Windows 10 ADMX and issues

I'm assigned to deploy ADMX templates for Windows 10 1709, but when I look at \\domainname\SYSVOL\domainname\Policies\PolicyDefinitions and \\domainname\SYSVOL\domainname\Policies\\PolicyDefinitions\en-US folders. There are many admx and adml files overlapping with same names.

For example, ActiveXInstallService.admx is also already in Sysvol.
The pic1 is the ones I downloaded and pic2 is the ones already in Sysvol. I'm not sure someone deployed previous version of Windows 10, but I need to update to 1709. How can I do this without causing problems to already active GPOs?

pic 1
PIC 1
pic2
PIC 2
Sungpill HanAsked:
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Jeff GloverSr. Systems AdministratorCommented:
If they have the same name, they will overwrite the old ones. Some Windows 10 admx an adml files are just updates of current files. You overwrite them with the current version. The only time you will see little to no overlap is with Office ADMX files (each will have the version number on it)
 the ADMX files for Windows are downlevel compatible.
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Sungpill HanAuthor Commented:
I did FC command to compare ADMX files from Windows 10 1709 and existing ones. There are some ADMX files which lost some settings in new ADMX files.
I'm a little concerned about old definitions for Windows 7 because of that reason. Since I only find comments every where that new ones will be downlevel compatible, I will go with it.

Thank you.
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