AdomdDataReader removes columns that specify the [All] member

Hello, 

I've recently switched from querying via CellSet to querying via DataReader and it is a great improvement in terms of performance. There's just one problem with it: When specifying the [All] member on a column, the AdomdDataReader will not have that column with it's [All] value in every row. The CellSet does have that column. 

Is there any option or any other way to also retrieve these columns via the DataReader? 

I've found this very old SO post with one answer with one answer that states that this behavior is by design. Can it still be deactivated? 

https://stackoverflow.com/questions/13195679/column-getting-removed-after-retrieving-data-using-adomd-adapter-if-it-contains

Thanks in advance and best regards,

mf00