The transition from an older version of CurrentWare to a newer one is smooth as the key remains valid and there’s no need for users to re-register.
It’s important to note that subscription keys are specific to each version at the time you register your licenses and will only function with that version. For example, v8.0 subscription keys can only be used with v8.0 and v7.0 subscription keys can only be used with v7.0. They are not compatible with other versions.