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This post provides a function which enables us to use ADSI to migrate AD group members. We can also specify whether to copy or move the group members.

function Migrate-ADGroup
   if (!([adsi]::Exists("LDAP://$sourceDN"))) {
        write-host "$sourceDN does not exist"
   if (!([adsi]::Exists("LDAP://$targetDN"))) {
        write-host "$targetDN does not exist"

    $sourceDNADSI = [ADSI]"LDAP://$sourceDN"
    $targetDNADSI = [ADSI]"LDAP://$targetDN"

    try {
        $sourceDNADSI.member | ForEach-Object {
            $groupObject = [adsisearcher]"(distinguishedname=$($_))"   

            if ($move) {
                write-host "Moving $($groupObject.FindOne()"
                try { $targetDNADSI.Add("LDAP://$_") } catch {}
                try { $sourceDNADSI.Remove("LDAP://$_") } catch {}
            } else {
                write-host "Copying $($groupObject.FindOne()"
                try { $targetDNADSI.Add("LDAP://$_") } catch {}
    } catch {
        write-host $_.Exception.Message

$sourcegroup = "CN=application1,OU=Apps,DC=alkanesolutions,DC=co,DC=uk"
$targetgroup = "CN=application2,OU=Apps,DC=alkanesolutions,DC=co,DC=uk"

#source group to migrate from, target group to migrate to, false (copy members) or true (move members)
Migrate-ADGroup $sourcegroup $targetgroup $false
Use ADSI to Migrate AD Group Members
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