Migrating CMOD Server to 8.5? You might want/need to upgrade ODWEK first

[Ed_Arnold]

http://www.ibm.com/support/docview.wss?uid=swg21592502

Content Manager OnDemand V8.4.1.x ODWEK CGI/Servlet issue with CacheFile
authentication against 8.5.x OnDemand servers     

Problem(Abstract)                                                         
                                                                           
Running a Content Manager OnDemand Web Enablement Kit (ODWEK) CGI/Servlet 
version prior to PTF 8.4.1.8 against an 8.5.x OnDemand server can result in
increased logon/logoff traffic to the OnDemand Server due to an issue with
authentication during CacheFile restoration.