[Solved]-How do I do a stacked bar chart as a drilldown to a stacked bar chart?-Highcharts

Using drill down to multiple series from multiple series demo it is possible to change stacking to normal and get drilldown to stacked columns.

JSFiddle 1: http://jsfiddle.net/rxjutt6v/

Using async drill down demo and addSingleSeriesAsDrilldown with applyDrilldown it is possible to get multiple series in drilldown when drilling into single series point.

JSFiddle 2: http://jsfiddle.net/49q18Lp3/1/