Using PowerShell to extract all contacts from MS CRM 2011

We are moving to Salesforce from MSCRM 2011. We need to get our data out so we can import into Salesforce. Here is the PowerShell script I am using to export contacts to csv.

$url="http://crm.sardverb.com/Company/xrmservices/2011/OrganizationData.svc/ContactSet?`$filter=StatusCode/Value eq 1"

$assembly = [Reflection.Assembly]::LoadWithPartialName("System.Web.Extensions")
$count=0
$output = @()

while ($url){
    function GetData ($url) {
    $webclient = new-object System.Net.WebClient
    $webclient.UseDefaultCredentials = $true
    $webclient.Headers.Add("Accept", "application/json")
    $webclient.Headers.Add("Content-Type", "application/json; charset=utf-8");
    $data=$webclient.DownloadString($url)
    return $data
    }
    $data=GetData($url) | ConvertFrom-Json
    $output += $data
    $count=$count+$data.d.results.length
    write-host $count
    if ($data.d.__next){
        #$url=$null
        $url=$data.d.__next.ToString()
    }
    else {
        $url=$null
    }
}

$output.d.results | Select -ExcludeProperty ParentCustomerId,__metadata @{l="ParentCustomerID";e={$_.ParentCustomerID.Id}},* | Export-Csv -NoTypeInformation C:\Contact.csv

Hope that helps someone.

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