Azure Powershell - Get ONLY one tag (key,value) of a resource and then apply that to another resource that is missing it

Question

I have a resource list filled with VMs. I need to get first the tag of the corresponding NICs because the tags of the VMs were accidentally removed, the NIC tags are still there. Then I need to reapply only the 'Monitored' tag over the corresponding VM. I am confused with arrays.

Foreach ($Resource in $ResourceList)
{

    $VM = Get-AzVM -Name $Resource
    $NICs = $VM.NetworkProfile.NetworkInterfaces

    Foreach($NIC in $NICs) {
        $CurrentNIC = $NIC.Id

        #CurrentTag should be filled with Get-AzResource instead of Az-Tag

        $CurrentResource = Get-AzResource -ResourceId $CurrentNIC
        $CurrentTag = $CurrentResource.Tags

        #Get tag "Monitored" from $CurrentTag variable


        $ResultsList += New-Object PsObject -property @{
            'Monitored' = $CurrentResource.Monitored          
        }

        #Apply Monitored tag over the current VM

            Update-AzTag -ResourceId $VM.Id -Tag $ResultsList -Operation Merge
    
       }

    }

}

$ResultsList += New-Object PsObject -property @{
    'Monitored' = $CurrentResource.Monitored  
}

It is getting populated with :

Monitored
-
-------------------------

Instead of :

Tags:

Name Value

Monitored default