Copying registry values

WiX doesn't provide a specific element for copying data from one registry value to another. However, you can accomplish this task by pairing a RegistrySearch element with RegistryValue. First, you'll store the value in a property by using a RegistrySearch element. Then, you'll reference that property in the Value attribute of the RegistryValue element. Here's an example:

<Property Id="MY_REG_VALUE">
   <RegistrySearch Id="MyRegistrySearch"
                   Root="HKLM" 
                   Key="Software\MyCompany\MyKey"
                   Name="MyDWORDValue" 
                   Type="raw" />
</Property>

<ComponentGroup Id="RegistryComponents" 
                Directory="INSTALLLOCATION">

   <Component Id="CMP_CopyRegValue" 
              Guid="747965AA-90F4-4262-BE55-3C1F4F7F65B4">
      <RegistryValue Id="MyRegistryValue" 
                     KeyPath="yes" 
                     Root="HKLM" 
                     Key="Software\MyCompany...