Microsoft Identity Manager Skype for Business / Lync PowerShell Management Agent Import Script. Supporting blog post is located here https://blog.darrenjrobinson.com/provisioning-users-for-lync-skype-for-business-with-fim-mim-using-the-granfeldt-powershell-management-agent/

Import.ps1

param (
	$Username,
	$Password,
	$OperationType,
	[bool] $usepagedimport,
	$pagesize
    )


#Needs reference to .NET assembly used in the script.
Add-Type -AssemblyName System.DirectoryServices.Protocols

$CookieFile = "C:\PROGRA~1\MICROS~4\2010\SYNCHR~1\EXTENS~2\Lync\Lync\lynccookie.bin"
$count = 0

#Getting Cookie from file
If (Test-Path $CookieFile –PathType leaf) { 
    [byte[]] $Cookie = Get-Content -Encoding byte –Path $CookieFile
} else { 
    $Cookie = $null
}

#region User
$Properties = @("objectGuid","sAMAccountName","msRTCSIP-UserEnabled","userPrincipalName","msDS-cloudextensionAttribute20","isDeleted")

#Running as FIM MA Account
$Credentials = New-Object System.Net.NetworkCredential($username,$password)
$RootDSE = [ADSI]"LDAP://RootDSE"
$LDAPDirectory = New-Object System.DirectoryServices.Protocols.LdapDirectoryIdentifier($RootDSE.dnsHostName)
$LDAPConnection = New-Object System.DirectoryServices.Protocols.LDAPConnection($LDAPDirectory, $Credentials) 
$Request = New-Object System.DirectoryServices.Protocols.SearchRequest($RootDSE.defaultNamingContext, "(&(objectClass=user)(sAMAccountName=U*))", "Subtree", $Properties) 

#Defining the object type returned from searches for performance reasons.
[System.DirectoryServices.Protocols.SearchResultEntry]$entry = $null


if ($OperationType -eq "Full")
{
    $Cookie = $null
}
else
{
    # delta run and we should use the cookie we already found
}

$DirSyncRC = New-Object System.DirectoryServices.Protocols.DirSyncRequestControl($Cookie, [System.DirectoryServices.Protocols.DirectorySynchronizationOptions]::IncrementalValues, [System.Int32]::MaxValue) 
$Request.Controls.Add($DirSyncRC) | Out-Null
    
$MoreData = $true
$Guids = @()

while ($MoreData) {
    $Response = $LDAPConnection.SendRequest($Request)

    ForEach($entry in $Response.Entries){
    #Check if this GUID already been handled to avoid adding duplicate objects
    If($Guids -contains ([GUID] $entry.Attributes["objectguid"][0]).ToString()){continue}

    # we always add objectGuid and objectClass to all objects
    $obj = @{}
    $obj.Add("objectGuid", ([GUID] $entry.Attributes["objectguid"][0]).ToString())
    $obj.Add("objectClass", "user")
    if ( $entry.distinguishedName.Contains("CN=Deleted Objects"))
	{
		# this is a deleted object, so we return a changeType of 'delete'; default changeType is 'Add'
		$obj.Add("changeType", "Delete")
	}
	else
	{
		# we need to get the directory entry to get the additional attributes 
		$DirEntry = New-Object System.DirectoryServices.DirectoryEntry "LDAP://$($entry.distinguishedName)"
		 # add values to the attributes that have changed
        	$obj.Add("accountName",$DirEntry.Properties["sAMAccountName"][0])
        	if ($DirEntry.Properties["userPrincipalName"][0]){$obj.Add("upn",$DirEntry.Properties["userPrincipalName"][0])}
  	    	if ($DirEntry.Properties["msRTCSIP-UserEnabled"] ) { [bool] $obj.lyncEnabled = $DirEntry.Properties["msRTCSIP-UserEnabled"][0] }else{[bool] $obj.lyncEnabled = $false }
        	if ($DirEntry.Properties["msDS-cloudExtensionAttribute20"][0]){$obj.Add("msDScloudextensionAttribute20",$DirEntry.Properties["msDS-cloudExtensionAttribute20"][0])} 
        	if ($DirEntry.Properties["msRTCSIP-PrimaryUserAddress"][0])
            {
                $sipaddress = $DirEntry.Properties["msRTCSIP-PrimaryUserAddress"][0] -replace '^SIP\:'
                $obj.Add("sipAddress",$sipaddress)
            }
        
        }
        #Add Guid to list of processed guids to avoid duplication
        $Guids += ,([GUID] $entry.Attributes["objectguid"][0]).ToString()
        #Return the object to the MA
	$obj
      }
  
    ForEach ($Control in $Response.Controls) { 
        If ($Control.GetType().Name -eq "DirSyncResponseControl") { 
            $Cookie = $Control.Cookie 
            $MoreData = $Control.MoreData 
            } 
        } 
    $DirSyncRC.Cookie = $Cookie 
    }

#Saving cookie file
Set-Content -Value $Cookie -Encoding byte –Path $CookieFile
$global:RunStepCustomData = [System.Convert]::ToBase64String($Cookie)
#endregion