RDM PowerShell via Batch Edit unable to modify existing Folders

UPDATE: Never Mind - found out I need to use "Advance search" and then batch edit the results to include folders. It would be good if this information was included in the powershell manual and github pages:
https://forum.devolutions.net/topics/27878/batch-edit-folder-security-permissions-from-gui

Hi,

As an initial test I just want to change the icon ('ImageName') of my folder using batch edit powershell, but it does not seem to work.
Going forward I would like to updates the permissions on the folders based on the folder names; but I cant seem to edit the simplest thing like the icon or Name of the folder.

I have followed the examples in the below two links and I have been able to successfully edit entries inside my folder structure. However I don't seem to be able to edit the actual folders/groups:
https://docs.devolutions.net/rdm/powershell-scripting/custom-powershell-commands/batch-actions-samples/
https://github.com/Devolutions/RDMSamples-ps/blob/main/custom_batch_actions/README.md



I have been copying the folder to a text editor and I can see:
<?xml version="1.0" encoding="utf-8"?>
<RDMExport>
<Connections>
<Connection>
<ConnectionType>Group</ConnectionType>
<CreatedBy>Chris Wyllie</CreatedBy>
<CreationDateTime>2024-04-16T01:16:45</CreationDateTime>
<Group>Restricted Site 1</Group>
<ImageName>SampleOffice2Green</ImageName>

So for example I would like to change the folder icon for SampleOffice2Green from to SampleOffice2Red:
if ($Connection.ConnectionType -like 'Group'){
if ($Connection.ImageName -like 'SampleOffice2Green'){
$Connection.ImageName = 'SampleOffice2Red';
$RDM.Save();
}
}

However running the above script at the top level of the folder results in no changes:

I have 12 non-folder entries under the folder I am right clicking on.

Its like the Batch action ignores all folder.