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Excel files that contain charts with the type combo are not imported into the spreadsheet as the original type seen in Excel. So, provide support to insert the combo-type chart for the data in spreadsheet and to import the excel files that contain the combo-type chart.
Attached screenshot for reference.
Attachment Link: https://www.syncfusion.com/downloads/support/directtrac/general/ze/Combo_chart_insertion1485372408