Grafana M3DB Data Source Issue

Hi,
We are facing issue with Grafana version 6.6.1 while creating new dashboards using M3DB data source , but it works with version 5.4.5.

Noticed below difference in the query, not sure if this is the issue or not.

http://localhost:7201/api/v1/graphite/metrics/find?from=1582032404&until=1582054006 (Version 6.6.1)

http://localhost/api/datasources/proxy/250/metrics/find?from=1582032472&query=*&until=1582054192 (Version 5.4.5)