Index: /trunk/src/org/openstreetmap/josm/data/osm/AbstractPrimitive.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/osm/AbstractPrimitive.java	(revision 18645)
+++ /trunk/src/org/openstreetmap/josm/data/osm/AbstractPrimitive.java	(revision 18646)
@@ -857,5 +857,5 @@
                             "created_by",
                             "converted_by",
-                            "current_id",
+                            "current_id", /* prevent export of this JOSM internal information, see OsmReader */
                             "geobase:datasetName",
                             "geobase:uuid",