We had performed a upgrade of Jenkins from v1.554.1 to the latest and stable v1.565.1.
After the upgrade, we see that the installed plugins from the previous version are not loaded in the new upgraded version.
As we are using apache-tomcat-7.0.54 as a app server for upgrade we have replaced the old jenkins.war with the latest one in the webapps folder.
There are no errors in the logs at startup and the JENKINS_HOME points to the old location but doesn't load the plugins from the JENKINS_HOME directory.
Request you to please help find the root cause this issue.