CMC 3.37.0 switched to _cmc_summary index
Splunk Cloud Monitoring Console (CMC) app which auto-update itself separately from Splunk Cloud recently switched from “summary” to “_cmc_summary” index in 3.37.0 update released on 27 March 2025. The update broke my custom license monitoring dashboards and alert. Resolved the issue by including the new index.
Update: CMC 3.37.1 update reverts it back to “summary” index to allow for gradual transition.