GreenGrass v2 remove deployment

Thanks for your question. The expected behavior depends on which version of Nucleus you are running. Assuming you're running Nucleus 2.5.0 or higher, the components from the old group will be removed once the device receives the deployment for the new group. For it to succeed, the device's IoT policy must grant the greengrass:ListThingGroupsForCoreDevice permission.

Full details can be found here: https://docs.aws.amazon.com/greengrass/v2/developerguide/manage-deployments.html

Best, Janice