JIRA Software Burndown Chart and Sprint Report to be measured by Days

When the time unit is set to Days and all the work log in the sprint is in days. Estimation configured to Original Time Estimate.

However, Greenhopper is not using the time unit of JIRA time tracking as the default measurement. The Original Time Estimate in burndown chart was shown in hours instead of days. In addition, the Original Time Estimate also showing hours in Sprint Report.