tag based search is not working on mstats command

[dmuraleetcs]

Does anyone know why the tag based search is not working in metric based commands. Is there any restriction or any alternative approach?

Working here,

index=_internal tag=windows_lab_iis

No Results for this command,

| mcatalog values(metric_name) WHERE tag=windows_lab_iis index=metrics* BY index, host

[richgalloway]

I suspect mcatalog is failing because the metrics index does not contain the fields referenced in the tag.