Issue
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The user wants to migrate from an old legacy war (CloudBees Jenkins Enterprise Client controller) or a new CJE war to the new CloudBees Jenkins team product.
Resolution
To migrate from a Legacy war with a Legacy per Executor License with Enterprise plugins to a CloudBees Jenkins team with OSS plugins only you need to perform the following steps:
1) Stop your Jenkins instance 2) Remove the license.xml file in your JENKINS_HOME 3) Remove the cb-envelope folder inside your JENKINS_HOME 4) Start the CJT war file pointing to the same JENKINS_HOME 5) When asked for a license, disable unlicensed plugins first using the UI ad-hoc button.
![remove unlicensed components](../_images/How-to-migrate-to-CJT-war/removeUnlicensedComponents1.cd1e5b1.png)
![uninstall components](../_images/How-to-migrate-to-CJT-war/removeUnlicensedComponents2.816a056.png)
6) Let Jenkins restart and prompt for a license 7) Install the new Team License either by inserting the license or by requesting a trial.
![activate product](../_images/How-to-migrate-to-CJT-war/activateProduct.3b4e162.png)
8) You’re done!
![Ready to Go](../_images/How-to-migrate-to-CJT-war/productIsready.a0dfd5d.png)