If you are upgrading from either Reflection for the Web 2014 R1 (12.0) or Reflection for the Web 2011 (11.0), you must first upgrade to Reflection for the Web 12.2, and then upgrade to version 12.3.
NOTE:As of version 12.2, several Management and Security Server components were renamed:
Management Server is called Administrative Server.
ReflectionData folder is called MSSData.
ID Manager is called Terminal ID Manager.
The default installation path (on Windows) is C:\Program Files\Micro Focus\MSS.