When changing some configurations related to JBoss you may be required to clear the cache folders before the changes will be properly picked up. This cache may also need to be cleared due to a variety of possible problems with JBoss.
JBoss stores a cache of information that is used frequently in the tmp & work folders. This includes information about configuration settings and also cached pieces of the webpage. The cache can sometimes keep the old information after you have modified it, making it seem like the change didn't complete successfully. In order to ensure the changes are picked up the cache should be cleared.
Any PIM or PAM SC versions that uses JBoss 4.2.3