Excel Formatting And Features That Are Not Transferred To Other File Formats

The Microsoft Office Excel 2007 Workbook format (.xlsx) preserves all worksheet and chart data, formatting, and other features available in Office Excel 2007, and Macro-Enabled Workbook format (.xlsm) preserves macros and macro sheets in addition to those features. If you save a workbook in another file format, such as a text file format, some of the formatting, data, and other features might be lost.