The document explicitly states the technology as 'Identity Services Engine (ISE) - 3.0' in the first line of the problem details. Even though the 'Software Version' field says 'N/A', the version is clearly specified in the Technology context.
The issue involves Identity Services Engine (ISE) version 3.0 where the Admin/Portal wildcard certificate fails to import to the secondary MNT node, requiring a workaround involving node deregistration and re-synchronization.