Change this to -ccb_explore_adf and save the file.
The arguments field in the downloaded json file will start with -cb_explore_adf. In the Azure portal, in the Personalizer resource, under Resource Management, on the Model and learning settings page, select Export learning settings. Automatic Optimization for multi-slot personalization will be supported in the future.
Multi-slot personalization will not work unless you disable Automatic Optimization.