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Big csv convert issue

I have large csv file 200mb size. Try convert to xslx- but its not convert all rows (70k rows).

        TxtLoadOptions opts = new TxtLoadOptions();
        opts.Separator = (';');
        opts.MemorySetting =(MemorySetting.MemoryPreference);

        Workbook workbook = new Workbook();

        var ws = workbook.Worksheets.Add("res");
        ws.Cells.ImportCSV("input.csv", opts,1,1);
        
        workbook.Save("output_out.xlsx");

@mesteruh,
We are able to convert attached 252MB csv file to xlsx using your code. Could you please use latest version of Aspose.Cells and let us know your feedback.