Pivot Table select all function

[Winzer]

So i have a pivot table that has a column for dates within the year. When i clear all the selected dates and choose one (i.e. 1/8/2007) the report will give me just those dates and infromtation. Now the issue is that when i try to select all (show all) in the drop down and click ok the report does not give me all the dates (i.e. 1/8/2007, 2/15/2007, 4/8/2008, etc) all it does is reset it self to my one selection again.

Has anyone come across this error before.

Ivan