Index: applications/editors/josm/plugins/opendata/test/unit/org/openstreetmap/josm/plugins/opendata/core/io/datasets/DataSetUpdaterTest.java
===================================================================
--- applications/editors/josm/plugins/opendata/test/unit/org/openstreetmap/josm/plugins/opendata/core/io/datasets/DataSetUpdaterTest.java	(revision 33358)
+++ applications/editors/josm/plugins/opendata/test/unit/org/openstreetmap/josm/plugins/opendata/core/io/datasets/DataSetUpdaterTest.java	(revision 33358)
@@ -0,0 +1,48 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.plugins.opendata.core.io.datasets;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.util.function.Predicate;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.openstreetmap.josm.TestUtils;
+import org.openstreetmap.josm.data.osm.DataSet;
+import org.openstreetmap.josm.data.osm.Way;
+import org.openstreetmap.josm.io.OsmApi;
+import org.openstreetmap.josm.plugins.opendata.core.datasets.DataSetUpdater;
+import org.openstreetmap.josm.plugins.opendata.core.io.archive.ZipReader;
+import org.openstreetmap.josm.testutils.JOSMTestRules;
+
+/**
+ * Unit tests of {@link DataSetUpdater} class.
+ */
+public class DataSetUpdaterTest {
+
+    /**
+     * Setup test.
+     */
+    @Rule
+    public JOSMTestRules rules = new JOSMTestRules().preferences().projection().devAPI().timeout(60000);
+
+    /**
+     * Non-regression test for ticket <a href="https://josm.openstreetmap.de/ticket/11166">#11166</a>
+     * @throws Exception if an error occurs during reading
+     */
+    @Test
+    public void testTicket11166() throws Exception {
+        File file = new File(TestUtils.getRegressionDataFile(11166, "raba760dissJosm.zip"));
+        try (InputStream is =   new FileInputStream(file)) {
+            Predicate<? super Way> p = w -> w.getNodesCount() >= 0.9 * OsmApi.getOsmApi().getCapabilities().getMaxWayNodes();
+            DataSet ds = ZipReader.parseDataSet(is, null, null, false);
+            assertTrue(ds.getWays().stream().filter(p).findAny().isPresent());
+            DataSetUpdater.updateDataSet(ds, null, file);
+            assertFalse(ds.getWays().stream().filter(p).findAny().isPresent());
+        }
+    }
+}