Why statistics is not rotated?

Symptoms

Statistics in Archive Management section was not rotated fully or partially.

Cause

Mostly statistics is not rotated because of specified number of days in Settings section.

Resolution

You need to specify respective number of days in Configuration → Settings → Auto-rotation and Cleaning → Statistics Rotate Delay field. A quantity of days has to match required period for rotation. For example, if you need to rotate last 3 month, specify 90 days in Settings.