Hey @SilvreLestang,
While an app moving from Connect to Forge can continue to utilise the License API from any Connect modules or remote JWT calls, any Forge modules will not have access to this and would have to evaluate via the license details shared within the app context. I’d recommend watching and voting for FRGE-786 to monitor this.
Forge apps do not currently have an ability to mock license state similar to Connect apps today. I’ve created ECO-242 which you can watch / vote on to share the importance of this capability. With that said, we have supported apps in testing by initially staging rollouts to their own cloud sites, prior to customers being able to update. This provides an opportunity to test and validate your app, prior to existing customers seeing the update option. More than happy to connect and discuss how this works.
Cheers,
Sean