|Excel Developer Reference|
Version Added: Excel 2007
expression A variable that represents a PivotCache object.
The default value is False. If the property is set to True for a PivotCache, refreshing any PivotTable attached to that PivotCache will upgrade the PivotCache and all the attached PivotTables to version 2007 (PivotTable.Version = 3) as part of the refresh.
If the property is set to False for a PivotCache, refreshing any PivotTable attached to that PivotCache will not change the version of the PivotCache, nor the version of all the attached PivotTables. They all stay the same version as before the refresh.
Saving to an Excel 2007 file format, when in compatibility mode, will set this property to True for all PivotCaches in the workbook.