Please download and try our latest fix/version Aspose.Cells for .NET v7.5.0.1 I have tested with it using your template file with the following code, the output file has the macros / codes preserved in it.
Sample code:
Workbook wb = new Workbook(“e:\test2\Template.xls”);
wb.Save(“e:\test2\outFile.xls”);
Thank you.
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