Powershell - Bulk Set-ADUser attributes via a CSV file

Question

I am attempting to do a Bulk replace of AD User account attributes via a CSV file.  Each line in this script works except the part of Set-ADUser where I enter -Replace $attribs. I'm not sure how to code this
part.
<#
The .csv file should have the following headers (first line)
GroupName,Status,Approver1,Approver2,Owner
#>
#Import CSV
$csv = @()
$csv = Import-Csv -Path "C:\TempAdd_Grp_Attrib.csv"
#Loop through all items in the CSV
ForEach ($item In $csv)
$gname = $item.GroupName
$attribs = @{'extensionAttribute2'=$item.Status; 'extensionAttribute3'=$item.Approver1; 'extensionAttribute4'=$item.Approver2; 'managedBy'=$item.Owner}
Set-ADGroup -Identity $gname #-Replace $attribs
mamadukes

Answer 1

Yes. I am attempting to update the AD Group extension attributes.
The code below works, but I know I can streamline this if I use the INSTANCE, which I am having an issue with (Set-ADGroup -Instance $Update)
Import-Module ActiveDirectory
<#
The .csv file should have the following headers (first line)
GroupName,Status,Approver1,Approver2,Owner
#>
#Import CSV
$date = get-date -Format "MMddyyyymm"
$csv = @()
$csv = Import-Csv -Path "C:\Temp\Add_Grp_Attrib2.csv"
#Loop through all items in the CSV
ForEach ($item In $csv)
$Update=(Get-ADGroup $item.GroupName -Properties extensionAttribute2,extensionAttribute3,extensionAttribute4,ManagedBy);
$Update."extensionAttribute2"=$item.Status
$Update."extensionAttribute3"=$item.Approver1
$Update."extensionAttribute4"=$item.Approver2
# Set-ADGroup -instance $Update
Set-ADGroup -Identity $item.groupName -ManagedBy $item.Owner
Get-ADGroup $item.GroupName -Properties extensionAttribute2,extensionAttribute3,extensionAttribute4,ManagedBy | select name,extensionAttribute2,extensionAttribute3,extensionAttribute4,ManagedBy | Export-Csv "C:\temp\Add_Grp_Attrib_Updates_$date.csv" -NoTypeInformation
mamadukes