copy one list item to another
  ####################################################################  #Copy/Replace items from one list to another list with Attachments  #Original Author:Adi  #Enhancements - Author: Indra Appala  ####################################################################   Remove-PSSnapin Microsoft.SharePoint.PowerShell -erroraction SilentlyContinue  Add-PSSnapin Microsoft.SharePoint.PowerShell -erroraction SilentlyContinue     try     {        $srcListSiteUrl = "http://win-4qnjgfbpcf3:2323/sites/test/"        $SourceListName = "Contacts 1000"        $dstListSiteUrl = "http://win-4qnjgfbpcf3:2323/sites/test/"        $DestinationListName = "Contact"        $keyColumnInternalName = "Title"        $sourceListWeb = Get-SPWeb -identity $srcListSiteUrl        $sourceListUrl = $sourceListWeb.ServerRelativeUrl + "/lists/" + $SourceListName;...