How to support dashboards with label name changes in the metrics database?

Hi,

I have the two sets of metrics in my TSDB based on my scrape job configuration:

Old scrape job
my_client_request_duration_seconds_sum{instance=“35.226.217.238:8002”, job=“my-old-scrape-job”, method=“POST”, status_code=“200”, k8s_namespace=“staging”} 10.62420876675
my_client_request_duration_seconds_sum{instance=“44.110.218.239:8002”, job=“my-old-scrape-job”, method=“POST”, status_code=“200”, k8s_namespace=“staging”} 10.62420876675

New scrape job

my_client_request_duration_seconds_sum{instance=“36.226.217.238:8002”, job=“my-new-scrape-job”, method=“POST”, status_code=“200”, namespace=“staging”} 20.62420876675
my_client_request_duration_seconds_sum{instance=“45.110.218.239:8002”, job=“my-new-scrape-job”, method=“POST”, status_code=“200”, namespace=“staging”} 20.62420876675

I wonder how I can aggregate and update my existing queries in the Grafana dashboard(s) to support & enable these label name changes. Any ideas or suggestions on this migration?

Thanks,
Teja