After an upgrade the file C:\Program Files (x86)\CA\DSM\Agent\OSConfig.xml is not updated.
A fix including the file OSConfig.xml has been applied before upgrade.
OSConfig.xml file is not updated because its "creation date" is different than "Modified Date".
MSI detects this file as an updated file and does not overwrite it.
Release : 14
Component : Client Automation
Execute following command prior the upgrade to SP3 :
powershell.exe -ExecutionPolicy ByPass -Command "$(Get-Item 'C:\Program Files (x86)\CA\DSM\Agent\OSConfig.xml').creationtime=$(Get-Item 'C:\Program Files (x86)\CA\DSM\Agent\OSConfig.xml').lastwritetime"
This command sets the creationtime of file C:\Program Files (x86)\CA\DSM\Agent\OSConfig.xml same as lastwritetime.
And then new file OSConfig.xml will be copied during upgrade.