promql/impossible doesn't understand label renaming

[skl]

In the example below, promql/impossible states that "Previously joined label owner_kind is being removed from the results":

group by (cluster, namespace, workload, workload_type, pod) (
  label_join(
    label_join(
      group by (cluster, namespace, job_name, pod) (
        label_join(
          kube_pod_owner{job="kube-state-metrics", owner_kind="Job"}
        , "job_name", "", "owner_name")
      )
      * on (cluster, namespace, job_name) group_left(owner_kind, owner_name)
      group by (cluster, namespace, job_name, owner_kind, owner_name) (
        kube_job_owner{job="kube-state-metrics", owner_kind!="Pod", owner_kind!=""}
      )
    , "workload", "", "owner_name")
  , "workload_type", "", "owner_kind")
)

However, label_join is used to rename owner_kind --> workload_type intentionally. label_replace might also be used for the same behaviour.

[prymitive]

Thanks, indeed label_join & label_replace should mark source labels as being used and not trigger this warning