chart series update highcharts code example
Example: update all series at once in highcahrts
chart.series[0].update({
pointStart: newSeries[0].pointStart,
data: newSeries[0].data
}, true); //true / false to redraw
chart.series[0].update({
pointStart: newSeries[0].pointStart,
data: newSeries[0].data
}, true); //true / false to redraw