I upploaded a example file. If we extract the excel 2003 ole object it works. The second object is a excel 2007 ole object. if we extract this object to a xslx file we can’t open it in Excel.
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
Thanks for your request. I managed to reproduce the problem on my side. Your request has been linked to the appropriate issue. You will be notified as soon as it is fixed.