Index: trunk/src/org/openstreetmap/josm/io/ChangesetQuery.java
===================================================================
--- trunk/src/org/openstreetmap/josm/io/ChangesetQuery.java	(revision 14039)
+++ trunk/src/org/openstreetmap/josm/io/ChangesetQuery.java	(revision 14040)
@@ -156,5 +156,5 @@
      */
     public Date getClosedAfter() {
-        return closedAfter;
+        return DateUtils.cloneDate(closedAfter);
     }
 
@@ -167,5 +167,5 @@
      */
     public Date getCreatedBefore() {
-        return createdBefore;
+        return DateUtils.cloneDate(createdBefore);
     }