Найти каждое заданное значение в XML-файле, преобразовать его и заменить результатом преобразования

$Data = [Xml](Get-Content -Path "C:\Temp\_Test\data.xml" -Encoding UTF8)
 
foreach ($item in $Data.Head.Logic)
{
$item.body = ([double]$item.body * 1000).ToString()
}
 
$Data.Save("C:\Temp\_Test\data-new.xml")

[xml]$x=gc file.xml;$x.Head.Logic|%{$_.body="$([Double]$_.body*1000)"};$x.Save('E:\xml\out.xml')

([xml]$x=gc file.xml).Head.Logic|%{$_.body="$([Double]$_.body*1000)"};$x.Save("$pwd\out.xml")

[xml]$xml=cat "$pwd\doc.xml"
(select-xml -XPath "//petrolWeight//text()" -Xml $xml).Node|%{
    [double]$_.Data*=1000
}; $xml.Save("$pwd\doc.xml")

([xml]$x=gc "$pwd\doc.xml").SelectNodes("//petrolWeight//text()")|%{[Double]$_.Data*=1000};$x.Save("$pwd\doc.xml")

$_.Data=[double]$_.Data*1000

$Data = [Xml](Get-Content -Path "C:\xml\doc.xml")
foreach ($item in ($Data.IBS_Trade_House.body.operation.linedoc | where {$_.petrolWeight}))
{
$item.petrolWeight = ([double]$item.petrolWeight * 1000).ToString()
}
$Data.Save("C:\xml\doc1.xml")

Write-host "Было:"
([xml]$x=gc doc.xml).SelectNodes("//petrolWeight//text()").Data
Write-host "Стало:"
([xml]$x=gc doc1.xml).SelectNodes("//petrolWeight//text()").Data

$Data = [Xml](Get-Content -Path "C:\xml\doc.xml")
foreach ($item in $data.SelectNodes("//petrolWeight/text()"))
{
$item.Data = ([double]$item.Data * 1000).ToString()
}
$Data.Save("C:\xml\doc1.xml")

$PSVersionTable.PSVersion
 
Write-host "Было:"
[xml]$x=gc doc.xml;$x.SelectNodes("//petrolWeight//text()") | ft ParentNode,Data -a
Write-host "Стало:"
[xml]$x=gc doc1.xml;$x.SelectNodes("//petrolWeight//text()") | ft ParentNode,Data -a

$Data = [Xml](Get-Content -Path "C:\xml\doc.xml")
foreach ($item in $data.SelectNodes("//petrolWeight/text()"))
{
$item.Data = [double]$item.Data * 1000
}
$Data.Save("C:\xml\doc1.xml")

[xml]$xml=cat "$pwd\doc.xml"
$xml.SelectNodes("//petrolWeight/text()")|%{
    $_.Data=[double]$_.Data * 1000
}; $xml.Save("$pwd\doc.xml")