Index: date/date_elements.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/date/date/date_elements.inc,v
retrieving revision 1.46.2.2.2.62
diff -u -p -r1.46.2.2.2.62 date_elements.inc
--- date/date_elements.inc	14 May 2009 14:58:04 -0000	1.46.2.2.2.62
+++ date/date_elements.inc	4 Jun 2009 21:45:17 -0000
@@ -55,7 +55,7 @@ function _date_field_update($op, &$node,
   $values = $items;
   foreach ($values as $delta => $item) {
     // Don't save empty values.
-    if (empty($item['value']) && $delta !== 0) {
+    if (empty($item['value'])) {
       unset($items[$delta]);
       continue;
     }