Upgrade Middleware4j
Version 6.x of the Middleware program includes a number of important enhancements.
One of the changes is a change to the structure of the config.xml file so that it's using a more logical structure which is easier to understand.
When you start the new program it will check the structure of your existing config.xml file and if it's using the version 5.x format or earlier it will automatically be upgraded to the latest version.
A backup of your existing configuration will be saved in the folder ./xml/config/backup which will allow you to revert back to an earlier version of the software if necessary.