My Databricks Experiments is cluttered with a whole lot of experiments. Many of them are notebooks which are showing there for some reason (even though they didn't have an MLflow run associated with it). I would like to delete the experiments, but it gives the message "Note: This action will also delete the notebook that corresponds to this experiment.

Are you sure you want to delete [notebook_name]?" Why isn't there an option to delete the experiment without deleting the notebook? It makes no sense. Also, why can't we create folder structures to better organize the experiments?