Index: applications/editors/josm/plugins/o5m/src/org/openstreetmap/josm/plugins/o5m/io/O5mReader.java
===================================================================
--- applications/editors/josm/plugins/o5m/src/org/openstreetmap/josm/plugins/o5m/io/O5mReader.java	(revision 34857)
+++ applications/editors/josm/plugins/o5m/src/org/openstreetmap/josm/plugins/o5m/io/O5mReader.java	(revision 35850)
@@ -245,5 +245,5 @@
         if (lastTs != 0) {
             checkTimestamp(lastTs);
-            pd.setTimestamp(new Date(lastTs * 1000));
+            pd.setInstant(new Date(lastTs * 1000).toInstant());
             if (osmUser != null)
                 pd.setUser(osmUser);