Use this as a filter:
IIF([Date] > DATETRUNC([Time Param], TODAY()), False, True)
I assume your hierarchy is done through a parameter of ['quarter', 'month', 'week', etc]. If they select quarter, then it will filter out all dates that are past the current time period's start date.
Thank you for the reply! When you say [Time Param] do you mean an explicit Parameter that is user selected? What I was referring to is the + - boxes as depicted below. In the thread listed in the original post, we figured out how to make tooltip calculations responsive to what ever time period is selected through via these buttons.