Index: trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTaskList.java
===================================================================
--- trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTaskList.java	(revision 1674)
+++ trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTaskList.java	(revision 1675)
@@ -102,4 +102,5 @@
         Set<Long> downloadedIds = getDownloadedIds();
         myPrimitiveIds.removeAll(downloadedIds);
+        myPrimitiveIds.remove(new Long(0));
         if (! myPrimitiveIds.isEmpty()) {
             handlePotentiallyDeletedPrimitives(myPrimitiveIds);