diff -r 1c052e32d725 openide.filesystems/test/unit/src/org/openide/filesystems/MultiFileObjectTestHid.java
--- a/openide.filesystems/test/unit/src/org/openide/filesystems/MultiFileObjectTestHid.java	Wed Mar 09 05:35:09 2011 +0100
+++ b/openide.filesystems/test/unit/src/org/openide/filesystems/MultiFileObjectTestHid.java	Mon Apr 04 18:02:53 2011 +0200
@@ -44,6 +44,7 @@
 
 package org.openide.filesystems;
 
+import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -61,6 +62,7 @@
     }
 
 
+    @Override
     protected String[] getResources (String testName) {
         return resources;
     }
@@ -219,4 +221,42 @@
         assertEquals("1st test", "mal", t.getAttribute("x"));
         assertEquals("2nd test", "mal", t.getAttribute("x"));
     }
+    
+    public void testMultiFileSystemWithOverridenAttributes() throws Exception {
+        MultiFileSystem mfs = (MultiFileSystem)this.testedFS;
+        List<FileSystem> all = new ArrayList<FileSystem>(Arrays.asList(mfs.getDelegates()));
+        File f = writeFile("layer.xml",
+                "<filesystem>\n"
+                + "    <folder name =\"org-sepix\">\n"
+                + "       <folder name =\"Panes\">\n"
+                + "            <file name=\"Demo.txt\">\n"
+                + "                <attr name=\"position\" intvalue=\"100\"/>\n"
+                + "            </file>\n"
+                + "      </folder>\n"
+                + "    </folder>\n"
+                + "</filesystem>");
+        XMLFileSystem xml = new XMLFileSystem(f.toURI().toURL());
+        all.add(xml);
+        mfs.setDelegates(all.toArray(new FileSystem[0]));
+
+
+        FileObject folder = mfs.findResource("org-sepix/Panes/");
+
+        for (FileObject fileObject : folder.getChildren()) {
+            assertEquals("should be 100", 100, fileObject.getAttribute("position"));
+
+            fileObject.setAttribute("position", 200);
+            assertEquals("should be 200", 200, fileObject.getAttribute("position"));
+            assertEquals("should be 200 still", 200, fileObject.getAttribute("position"));
+        }
+    }
+
+    private File writeFile(String name, String content) throws IOException {
+        File f = new File(getWorkDir(), name);
+        java.io.FileWriter w = new java.io.FileWriter(f);
+        w.write(content);
+        w.close();
+        return f;
+    }
+    
 }
diff -r 1c052e32d725 openide.filesystems/test/unit/src/org/openide/filesystems/XMLFileSystemTestHid.java
--- a/openide.filesystems/test/unit/src/org/openide/filesystems/XMLFileSystemTestHid.java	Wed Mar 09 05:35:09 2011 +0100
+++ b/openide.filesystems/test/unit/src/org/openide/filesystems/XMLFileSystemTestHid.java	Mon Apr 04 18:02:53 2011 +0200
@@ -333,6 +333,32 @@
         assertNotNull("Returned", instance);
         assertEquals("Right class", Count.class, instance.getClass());
     }
+    public void testMultiFileSystemWithOverridenAttributes() throws Exception {
+        File f = writeFile("layer.xml",
+                "<filesystem>\n"
+                + "    <folder name =\"org-sepix\">\n"
+                + "       <folder name =\"Panes\">\n"
+                + "            <file name=\"Demo.txt\">\n"
+                + "                <attr name=\"position\" intvalue=\"100\"/>\n"
+                + "            </file>\n"
+                + "      </folder>\n"
+                + "    </folder>\n"
+                + "</filesystem>");
+
+        xfs = FileSystemFactoryHid.createXMLSystem(getName(), this, f.toURI().toURL());
+        final LocalFileSystem lfs = new LocalFileSystem();
+        lfs.setRootDirectory(getWorkDir());
+        MultiFileSystem mfs = new MultiFileSystem(new FileSystem[] { lfs, xfs });
+        FileObject folder = mfs.findResource("org-sepix/Panes/");
+
+        for (FileObject fileObject : folder.getChildren()) {
+            assertEquals("should be 100", 100, fileObject.getAttribute("position"));
+
+            fileObject.setAttribute("position", 200);
+            assertEquals("should be 200", 200, fileObject.getAttribute("position"));
+            assertEquals("should be 200 still", 200, fileObject.getAttribute("position"));
+        }
+    }
 
     public void testGetAttributeDoesNotAccessAllAttributes() throws Exception {
         File f = writeFile("layer.xml",