Analytic Links 188.8.131.52.400 can be used with the Oracle Enterprise Performance Management System 184.108.40.206.xxx and 220.127.116.11.xxx EPM System releases only. Pre-18.104.22.168.xxx EPM System releases are not supported.Another new feature is that migration of HFM security to Essbase has been improved for more fine grained control when using Shared Services groups with HFM security classes. And as usual, lots of bugs have been squashed. See the Patch Details page on Oracle Support for full description of the update: Oracle Essbase Analytics Link for Hyperion Financial Management Patch Set Update (PSU): 22.214.171.124.400
Note that this update requires a full installation of EAL (uninstall previous version, install updated one, configure the updated version).