1. In a constituent type export, under the Action node, select the Action Date field.  Don't limit the date range.
  2. In the Crystal Report, insert a group on the Constituent.
  3. Next, create a date parameter to represent the As Of date in the report.
  4. Then create a formula to calculate which Action Dates occurs after the As Of date:
    if {CnAct_1.CnAct_1_Action_Date} > {?AsOfDate} then {CnAct_1.CnAct_1_Action_Date}
where {?AsOfDate} represents the parameter field created in the previous step.