Lost page breaks on xlsx file

I have an xlsx form created in Excel 2010 which has a manual page break set to fit all to 1 page. When I open in LibreOffice Calc (Windows 7) the page breaks are not kept and default to 12 pages. If I save the Excel form as 97-2003 xls format and try again the page breaks are preserved correctly.

Is this a known bug? I can’t find it on the Bugzilla system. Is there anyway to fix this?

Thanks in advance