 Qamar ud-Din's forces unable to defeat Timur, but at the same time Timur was incapable of decisively defeating the Moghuls, who were able to retreat into the barren steppe country of Moghulistan.During a fresh invasion by Timur and his army in 1390, however, Qamar ud-Din disappeared.His disappearance enabled a Chagatayid, Khizr Khoja, to gain control of Moghulistan.