Summary: Editing a Cumulative Flow chart, changing Date Range to More than X days and back will deselect Archived cards, and selecting Archived cards will deselect Date Range. DOES seem to work correctly for NEW Chart views.
  1. Create Chart view, switch to Cumulative Flow.
  2. Save Chart.
  3. Refresh page.
  4. Change Date Range
  5. Select Archived cards
  6. Change to More than X days.
Observe that Archived cards is now unselected and can't be selected together with Date Range.