Index: /trunk/scripts/SyncEditorLayerIndex.groovy
===================================================================
--- /trunk/scripts/SyncEditorLayerIndex.groovy	(revision 11665)
+++ /trunk/scripts/SyncEditorLayerIndex.groovy	(revision 11666)
@@ -332,5 +332,11 @@
                     t += " or '${ef}'";
                 }
-                myprintln "* Date differs (${t} != '${jd}'): ${getDescription(j)}"
+                if (jd.isEmpty()) {
+                    myprintln "- Missing JOSM date (${t}): ${getDescription(j)}"
+                } else if (t.isEmpty()) {
+                    myprintln "+ Missing ELI date ('${jd}'): ${getDescription(j)}"
+                } else {
+                    myprintln "* Date differs (${t} != '${jd}'): ${getDescription(j)}"
+                }
             }
         }