How To Manage and Clean Software Update Groups in SCCM

<#
.SYNOPSIS
This script will add all updates from the latest Software Update Group to a defined Software Update Group.
    
.DESCRIPTION
This script will add all updates from the latest Software Update Group to a defined Software Update Group.
Author: Daniel Classon (www.danielclasson.com)
Version: 1.0
Date: 2018-12-18
    
.EXAMPLE
.\Add-SUGMembers -DestinationSUG SUG1
This will add all updates contained in the latest Software Updates Group to SUG1.
    
.DISCLAIMER
All scripts and other powershell references are offered AS IS with no warranty.
These script and functions are tested in my environment and it is recommended that you test these scripts in a test environment before using in your production environment.
#>

PARAM(
    [string]$DestinationSUG
    )
#Load SCCM Powershell module
Try {
    Import-Module (Join-Path $(Split-Path $env:SMS_ADMIN_UI_PATH) ConfigurationManager.psd1) -ErrorAction Stop
}
Catch [System.UnauthorizedAccessException] {
    Write-Warning -Message "Access denied" ; break
}
Catch [System.Exception] {
    Write-Warning "Unable to load the Configuration Manager Powershell module from $env:SMS_ADMIN_UI_PATH" ; break
}
#Set current drive to SCCM drive
$SiteCode = Get-PSDrive -PSProvider CMSITE
Set-Location -Path "$($SiteCode.Name):\"
Function Write-Log
{
 
    PARAM(
        [String]$Message,
        [int]$Severity,
        [string]$Component
    )
        $LogPath = $PSScriptRoot
        $TimeZoneBias = Get-WMIObject -Query "Select Bias from Win32_TimeZone"
        $Date= Get-Date -Format "HH:mm:ss.fff"
        $Date2= Get-Date -Format "MM-dd-yyyy"
        $Type=1
         
        "<![LOG[$Message]LOG]!><time=$([char]34)$Date$($TimeZoneBias.bias)$([char]34) date=$([char]34)$date2$([char]34) component=$([char]34)$Component$([char]34) context=$([char]34)$([char]34) type=$([char]34)$Severity$([char]34) thread=$([char]34)$([char]34) file=$([char]34)$([char]34)>"| Out-File -FilePath "$LogPath\Add-SUGMembers.log" -Append -NoClobber -Encoding default
}
#Change membership of Software Update to new Software Update Group
$LatestSUG = Get-CMSoftwareUpdateGroup | Select-Object LocalizedDisplayName,DateCreated | Sort-Object DateCreated | Select-Object -Last 1 
$Updates = Get-CMSoftwareUpdate -UpdateGroupName $LatestSUG -Fast
$Count = 0
Foreach ($Update in $Updates) {
    $Count++
    Try {
        Add-CMSoftwareUpdateToGroup -SoftwareUpdateId $($Update.CI_ID) -SoftwareUpdateGroupId $($DestinationSUG.CI_ID)
        Write-Progress -Activity "Adding $($Update.LocalizedDisplayName) to $($DestinationSUG.LocalizedDisplayName)" -Status "Adding $Count of $($Updates.Count) updates to $($SourceSUG.LocalizedDisplayName)" -PercentComplete ($Count / $Updates.count * 100)
        Write-Log -Message "Adding $($Update.LocalizedDisplayName) to $($DestinationSUG.LocalizedDisplayName)" -Severity 1 -Component "Add SU to SUG"
    }
    Catch {
        Write Warning "$_.Exception.Message"
        Write-Log -Message "$_.Exception.Message" -Severity 3 -Component "Add SU to SUG"
    }
}
Set-Location $PSScriptRoot