Please see my edited demo that uses the official highcharts-angular wrapper.
Initially the chart has a blue series with type:arearange and dataGrouping, as well as a red overplotted series. Note the tooltips refer to the points of the red series. More info in the demo.
The first button will add another such pair of series. The code uses addSeries to do so. It works.
The second button should do the same, but by changing the chart options instead of addSeries. It does not work. The new series appears, but all the red series and tooltips disappear. The desire is to make this method work!
I have studied the (nice) highcharts-angular demos and instructions, but I cannot make it work in my case.