Discussion Board Posting Dates

Prior to the last upgrade (last week) discussions (when viewed from the grading side) displayed the date that the student first posted on the discussion board.  Since this last upgrade, it has reverted to the old system of recording the last date that the student posted. PLEASE switch back!!!  The former saved so much grading time.  Now we have to go in and search each student to see if they submitted their initial post on time.  No bueno.  : /