Upgrade Guides for Licensing Review the list of migration recommendations each time you move to a new version. Licensing 6.00 upgrade guideThese topics describe product changes you must be aware of when upgrading to version 6.00.FLM 6.00 upgrade guideThese topics describe product changes you must be aware of when upgrading to version 6.00.Upgrade the FLM without re-applying licensesWhen you upgrade the Four Js license manager, you do not need to reinstall your existing licenses.Configure compatibility for Genero prior to 3.21To make your Genero 3.20 or Genero 3.10 installation compatible with FLM 6.00, you must upgrade the license controller to version 6.00 and configure the Genero installation to run in compatibility mode. To use a subscription license with your Genero 3.20 and 3.10 installation, FLM 6.00 is required; therefore, upgrading the license controller and configuring the Genero installation to run in compatibility mode is also required.