The Unamanaged status and info is in the Nodes table.
You can create a Custom SQL report with the following query:
Select Caption, unmanagefrom, UnmanageUntil From Nodes Where Unmanaged=1 order by UnManageUntil ASC
to list all unmanaged nodes, when they have been unmanaged and when they are set to be managed again.
Save the report and add it to your Orion console using the Report from Report Writer resource.
Thanks for your answer. I appreciate that.