Index: applications/editors/josm/plugins/poly/build.xml
===================================================================
--- applications/editors/josm/plugins/poly/build.xml	(revision 30416)
+++ applications/editors/josm/plugins/poly/build.xml	(revision 30495)
@@ -5,5 +5,5 @@
     <property name="commit.message" value="Commit message"/>
     <!-- enter the *lowest* JOSM version this plugin is currently compatible with -->
-    <property name="plugin.main.version" value="7001"/>
+    <property name="plugin.main.version" value="7248"/>
 
     <!-- Configure these properties (replace "..." accordingly).
Index: applications/editors/josm/plugins/poly/src/poly/PolyImporter.java
===================================================================
--- applications/editors/josm/plugins/poly/src/poly/PolyImporter.java	(revision 30416)
+++ applications/editors/josm/plugins/poly/src/poly/PolyImporter.java	(revision 30495)
@@ -20,5 +20,5 @@
 import org.openstreetmap.josm.gui.progress.ProgressMonitor;
 import org.openstreetmap.josm.io.IllegalDataException;
-import org.openstreetmap.josm.io.MirroredInputStream;
+import org.openstreetmap.josm.io.CachedFile;
 import org.openstreetmap.josm.io.OsmImporter;
 import org.openstreetmap.josm.tools.CheckParameterUtil;
@@ -36,5 +36,5 @@
 
     protected DataSet parseDataSet( final String source ) throws IOException, SAXException, IllegalDataException {
-        return parseDataSet(new MirroredInputStream(source), NullProgressMonitor.INSTANCE);
+        return parseDataSet(new CachedFile(source).getInputStream(), NullProgressMonitor.INSTANCE);
     }