Updated Parameter values not reflecting in the pbix

I have cloned a report from an existing workspace A to a new workspace B using ExportReportInGroupAsync() PowerBI v2 API and updated the parameters of that report's dataset using UpdateParametersInGroupAsync(). When I refresh the report's dataset in workspace B using data refresh REST API and then access the report, it shows the data as expected based on the updated parameter values. Now when I download the pbix of the report from workspace B, the parameters still show the old values. Is this an expected behavior?