Index: trunk/src/org/openstreetmap/josm/gui/dialogs/relation/GenericRelationEditor.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/dialogs/relation/GenericRelationEditor.java	(revision 5971)
+++ trunk/src/org/openstreetmap/josm/gui/dialogs/relation/GenericRelationEditor.java	(revision 5972)
@@ -24,4 +24,5 @@
 import java.util.Collection;
 import java.util.Collections;
+import java.util.EnumSet;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -82,4 +83,5 @@
 import org.openstreetmap.josm.gui.tagging.TagEditorPanel;
 import org.openstreetmap.josm.gui.tagging.TagModel;
+import org.openstreetmap.josm.gui.tagging.TaggingPreset;
 import org.openstreetmap.josm.gui.tagging.ac.AutoCompletingTextField;
 import org.openstreetmap.josm.gui.tagging.ac.AutoCompletionList;
@@ -753,4 +755,5 @@
     public static Command addPrimitivesToRelation(final Relation orig, Collection<? extends OsmPrimitive> primitivesToAdd) {
         try {
+            final Collection<TaggingPreset> presets = TaggingPreset.getMatchingPresets(EnumSet.of(TaggingPreset.PresetType.RELATION), orig.getKeys(), false);
             Relation relation = new Relation(orig);
             boolean modified = false;
@@ -763,5 +766,6 @@
                     continue;
                 }
-                relation.addMember(new RelationMember("", p));
+                final String role = presets.isEmpty() ? null : presets.iterator().next().suggestRoleForOsmPrimitive(p);
+                relation.addMember(new RelationMember(role == null ? "" : role, p));
                 modified = true;
             }