Index: /trunk/src/org/openstreetmap/josm/gui/dialogs/RelationEditor.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/dialogs/RelationEditor.java	(revision 1297)
+++ /trunk/src/org/openstreetmap/josm/gui/dialogs/RelationEditor.java	(revision 1298)
@@ -278,4 +278,10 @@
             }
         });
+        ListSelectionModel lsm2 = propertyTable.getSelectionModel();
+        lsm2.addListSelectionListener(new ListSelectionListener() {
+            @Override public void valueChanged(ListSelectionEvent e) {
+                Main.ds.setSelected(RelationEditor.this.relation);
+            }
+        });
         propertyTable.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE);