When any of the methods which result in a change in the data source are called with a value of false for the 'update' parameter, the change request is cached, but not sent to the OLAP server; this property returns true if any such changes have been made since the last call to the UpdateAsync method.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2