With the new Azure pipeline, the bill we receive contains both actual and amortized costs. In the platform, we split these across two reports: the Cost History report and the Amortized Cost report.
Whereas in the FlexReport, these two costs (Amortized and Actual) are shown as a single bill. To view these two charges, select data source as Azure Cost management(beta) and select metric type dimension. This will ensure flex report match with the cost history.