When upgrading 3scale 2.3 from 2.4 using the steps provided in the documentation 1.2. Migrating 3scale API Management 2.3 to 2.4, the upgrade works correctly.
When creating a new service, the service discovery is available in the admin portal. However, when editing the configuration for the service discovery according to the steps provided in the Service Discovery documentation, the configmap entry for the service discovery configuration is missing. See screenshot "oc_edit_configmap_system.png".