Find and Replace User ID in SharePoint InfoPath Forms using PowerShell

Requirement: Replace User IDs in InfoPath Forms.

Little background: A particular user's User account changed in Active directory and in SharePoint we ran Move-SPUser cmdlet to accommodate the user's SAM account name change. However, There are many InfoPath form libraries with bunch of InfoPath forms in it - with old user id. Of course, Move-SPUser has no effect on InfoPath Forms!

PowerShell script to search and replace user id in InfoPath XML Forms:

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue

#Configuration Parameters
$SiteCollURL="http://intranet.crescent.com"

#Old and New User IDs - CASE SENSITIVE!
$OldUserID="<pc:AccountId>i:0#.w|Crescent\JohnA</pc:AccountId>"
$NewUserID="<pc:AccountId>i:0#.w|Crescent\JonhAbraham</pc:AccountId>"

#Get all webs in the site collection
$WebsColl = Get-SPSite $SiteCollURL | Get-SPWeb -Limit All

#Iterate through each web
foreach($web in $WebsColl)
{
    Write-host "Processing web:"$web.Url
    
    #Get all InfoPath Form Libraries in the web
    $InfoPathLibs = $web.lists | where { $_.BaseType -eq "DocumentLibrary" -and $_.BaseTemplate -eq "XMLForm"} 

    #Loop through each InfoPath form library and Forms (.xml)
    Foreach($Library in $InfoPathLibs)
    {
        Foreach($Item in $Library.Items)
        {
            # Load the contents of the InfoPath Form
            $File = $Item.File
            $Data = [System.Text.Encoding]::ASCII.GetString($File.OpenBinary())
            
            #Check if the File has Old ID
            if($data.Contains($OldUserID))
            {
                $Data = $Data.Replace($OldUserID, $NewUserID)
                $Data = $Data.Replace("???","") #special fix!
                $File.SaveBinary([System.Text.Encoding]::ASCII.GetBytes($Data))

                Write-host "InfoPath XML File updated at $($web.URL)/$($Item.File.URL)"
            }
        }
    }
}

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