$contribution->trxn_id = $input['trxn_id'];
$contribution->receive_date = CRM_Utils_Date::isoToMysql($contribution->receive_date);
$contribution->thankyou_date = CRM_Utils_Date::isoToMysql($contribution->thankyou_date);
$contribution->trxn_id = $input['trxn_id'];
$contribution->receive_date = CRM_Utils_Date::isoToMysql($contribution->receive_date);
$contribution->thankyou_date = CRM_Utils_Date::isoToMysql($contribution->thankyou_date);