Change Item Template.ps1

## Can use Path or ID to get the item
$newTemplate = Get-Item "{622A0FF0-2628-423B-9B79-3A7249804635}";

$searchItems = Find-Item `
    -Index sitecore_master_index `
    -Criteria @{Filter = "Equals"; Field = "_name"; Value = "Menus"}, 
    @{Filter = "StartsWith"; Field = "_fullpath"; Value = "/sitecore/content/" }
    @{Filter = "Equals"; Field = "templateid"; Value = "1e96593acae043acbaebf3497072b118" }
    
    if($searchItems)
    {
        foreach($searchItem in $searchItems)
        {
            $id = $searchItem.ItemId
            Write-Host $searchItem.Path
            
            $item = Get-Item $id 
            $item.ChangeTemplate($newTemplate)
        }
    }
    else
    {
        Write-Host "No Items to change"
    }