Index: src/org/openstreetmap/josm/io/OsmWriter.java
===================================================================
--- src/org/openstreetmap/josm/io/OsmWriter.java	(revision 1036)
+++ src/org/openstreetmap/josm/io/OsmWriter.java	(working copy)
@@ -216,8 +216,9 @@
 			out.print(" user='"+XmlWriter.encode(osm.user.name)+"'");
 		}
 		out.print(" visible='"+osm.visible+"'");
+    // version and changeset were added with 0.6 API
 		if( osm.version != -1 )
-			out.print( " old_version='"+osm.version+"'");
+			out.print( " version='"+osm.version+"'");
 		if( this.changeset != null && this.changeset.id != 0)
 			out.print( " changeset='"+this.changeset.id+"'" );
 	}