Reply for https://powershell.org/forums/topic/replacing-xml-node/

powershell-forum-topic-replacing-xml-node.ps1

$path = "C:\Testing\File.xml"

[Xml]$servicefactoryconfig = Get-Content -Path $path -Raw

$old = $servicefactoryconfig.SelectSingleNode("/factory/map/add[@key='Audit']")

$parent = $old.ParentNode
[void] $parent.RemoveChild($old)

$newNode = [Xml] @'
<add key="Audit" assembly="OpenContent.Platform.Core.dll" class="OpenContent.Core.Audit.Services.AuditASMXProxy">
	<parameter name="baseUrl" class="string" value="http://hostname/Website" />
	<parameter name="servicePath" class="string" value="Audit/AuditASMX.asmx" />
	<parameter name="timeout" class="int" value="120" />
	<parameter name="policy" class="string" value="AuditServicePolicy"/>
</add>
'@

[void] $parent.AppendChild($servicefactoryconfig.ImportNode($newNode.add, $true))

$servicefactoryconfig.save($path)