Copies Final Layout Back To Page Template and optionally resets the page final renderings back to the page templates standard values

Copy-Page-FinalLayout-To-Template.ps1

function Copy-Page-FinalLayout-To-Template([string]$pagePath,[switch]$ResetLayout){
    #get the page item
    $item = Get-Item -Path "master:$pagePath"
    
    #get the final layout from the page
    $finalLayoutField = New-Object -TypeName "Sitecore.Data.Fields.LayoutField" -ArgumentList $Item.Fields[[Sitecore.FieldIDs]::FinalLayoutField]
    
    if ($finalLayoutField -eq $null) {
        Write-Error "Couldn't find final layout on: $($Item.Name)"
    }
    if ($finalLayoutField.Value -eq $null -or $finalLayoutField.Value -eq "") {
        return;
    }
    
    #get the items template and standard values on the template
    $template = Get-ItemTemplate -ID $item.ID 
    $templateItem = Get-Item -Path "master:$($template.ID)"
    $templateStandardValuesPath = "$($templateItem.Paths.FullPath)/__Standard values";
    $standardValuesItem = Get-Item -Path "$($templateItem.Paths.FullPath)/__Standard values"
    
    #copy the final layout details back to the the renderings field on the standard values
    $finalLayoutDefinition = [Sitecore.Layouts.LayoutDefinition]::Parse($finalLayoutField.Value)
    $standardValuesItem.Editing.BeginEdit()
    $standardValuesItem["__Renderings"] = $finalLayoutDefinition.ToXml();
    $standardValuesItem.Editing.EndEdit()
     
    Write-Host "Template Standard Values Updated: $($templateItem.Name)"
    
    #reset the page final renderings back to the page templates standard values
    if($ResetLayout){
        Reset-ItemField -Item $Item -Name "__Final Renderings" -IncludeStandardFields
        Write-Host "Page Final Renderings Reset To Standard Values: $($item.Name)"
    }
}