Do WiX patches update registry settings?

This is a two-part question:

1. Do "just-WiX" WiX patches update components with RegistryValue key-paths when those RegistryValues are different in the updated build?
2. Do "admin-image" WiX patches perform differently or the same in regar开发者_如何转开发ds to such components?

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Both approaches should update registry settings.