Excel 2010 inplace not showing File tab

Wondering if anyone else having an Excel 2010 inplace issue not showing the File ("Backstage") tab to allow Save or Save As operations? Noticed others searched SAP xSearch help with similar Excel 2010 search terms but nothing relevant returned...

We're on ERP 6.04, NW 7.01sp5, SAPGUI 7.20sp2 with Excel 2010 running on XP sp3.

Thanks in advance (and full points) for any resolution ideas or issue confirmations before opening an OSS ticket :>