Import of XML searches using Powershell

We have a script that creates multiple XML files to send a notification when a security group is modified. We can import these manually in Change Auditor no problem and they work fine. But I cannot find any Powershell cmdlet in Change Auditor Powershell module to import these XML file while this features is implemented in the GUI. Only the Add-CASearch I can see which is not doing what I need. Is there a way to import just like we do in the GUI but using Powershell?

Or maybe there is a folder (hidden) that I am not seeing to copy over these XML?  

We are at a point that for every groups created, there is an authority approver email address attached to it and every time there is a new group, a new alert needs to be created.  The script saves a tons of time, but if we could add the import part to CA in the script, it will help a tons.

Thanks in advance