The behavior is changed in the following ways:
You no longer need to create the stopwords.txt file manually. Instead, the Informatica services installer creates a default stopwords.txt file in the following directory:
<Informatica installation directory>\services\shared\jars\pc\classes
You must set the UseCustomStopWords property in the imm.properties file to true.
The stopwords.txt file created by the installer contains the default list of English words to ignore in searches. To customize the word list, update the stopwords.txt file, enable the UseCustomStopWords property, disable and enable the Metadata Manager Service, and then manually update the search index for all resources.
Previously, to customize the word list, you had to create the stopwords.txt file manually, disable and enable the Metadata Manager Service, and then manually update the search index for all resources.