diff --git a/src/main/java/com/conveyal/gtfs/loader/JdbcTableWriter.java b/src/main/java/com/conveyal/gtfs/loader/JdbcTableWriter.java
index a967f0f96..86ee2c771 100644
--- a/src/main/java/com/conveyal/gtfs/loader/JdbcTableWriter.java
+++ b/src/main/java/com/conveyal/gtfs/loader/JdbcTableWriter.java
@@ -1483,6 +1483,11 @@ private String[] parseExceptionListField(int id, String namespace, Table table,
         return parsedString.replaceAll("[{}]", "").split("[,]", 0);
     }
 
+    private String getResultSetString(int column, ResultSet resultSet) throws java.sql.SQLException {
+        String resultSetString = resultSet.getString(column);
+        return resultSetString == null ? "" : resultSetString;
+    }
+
     /**
      * Delete all entries in calendar dates associated with a schedule exception.
      */
@@ -1579,7 +1584,7 @@ private void updateReferencingTables(
                                     connection.rollback();
                                     if (entityClass.getSimpleName().equals("Stop")) {
                                         String patternStopLookup = String.format(
-                                            "select distinct p.id, r.id " +
+                                            "select distinct p.id, r.id, r.route_short_name, r.route_id " +
                                             "from %s.pattern_stops ps " +
                                             "inner join " +
                                             "%s.patterns p " +
@@ -1599,7 +1604,12 @@ private void updateReferencingTables(
                                             ResultSet resultSet = patternStopSelectStatement.getResultSet();
                                             while (resultSet.next()) {
                                                 patternAndRouteIds.add(
-                                                    "{" + resultSet.getString(1) + "-" + resultSet.getString(2) + "}"
+                                                    String.format("{%s-%s-%s-%s}",
+                                                        getResultSetString(1, resultSet),
+                                                        getResultSetString(2, resultSet),
+                                                        getResultSetString(3, resultSet),
+                                                        getResultSetString(4, resultSet)
+                                                    )
                                                 );
                                             }
                                         }