diff -r ffd225664560 -r 2720015f5883 lucene/contrib/misc/src/java/org/apache/lucene/index/MultiPassIndexSplitter.java
--- a/lucene/contrib/misc/src/java/org/apache/lucene/index/MultiPassIndexSplitter.java	Wed Aug 11 21:33:28 2010 +0000
+++ b/lucene/contrib/misc/src/java/org/apache/lucene/index/MultiPassIndexSplitter.java	Wed Aug 11 19:34:22 2010 -0400
@@ -205,7 +205,6 @@
       if (oldDels != null) {
         dels.or(oldDels);
       }
-      storeDelDocs(null);
     }
 
     @Override
diff -r ffd225664560 -r 2720015f5883 lucene/src/java/org/apache/lucene/index/IndexReader.java
--- a/lucene/src/java/org/apache/lucene/index/IndexReader.java	Wed Aug 11 21:33:28 2010 +0000
+++ b/lucene/src/java/org/apache/lucene/index/IndexReader.java	Wed Aug 11 19:34:22 2010 -0400
@@ -1304,16 +1304,4 @@
   Fields retrieveFields() {
     return fields;
   }
-
-  private Bits storedDelDocs;
-
-  /** @lucene.internal */
-  void storeDelDocs(Bits delDocs) {
-    this.storedDelDocs = delDocs;
-  }
-
-  /** @lucene.internal */
-  Bits retrieveDelDocs() {
-    return storedDelDocs;
-  }
 }
diff -r ffd225664560 -r 2720015f5883 lucene/src/java/org/apache/lucene/index/MultiFields.java
--- a/lucene/src/java/org/apache/lucene/index/MultiFields.java	Wed Aug 11 21:33:28 2010 +0000
+++ b/lucene/src/java/org/apache/lucene/index/MultiFields.java	Wed Aug 11 19:34:22 2010 -0400
@@ -103,31 +103,27 @@
     Bits result;
     if (r.hasDeletions()) {
 
-      result = r.retrieveDelDocs();
-      if (result == null) {
+      final List<Bits> bits = new ArrayList<Bits>();
+      final List<Integer> starts = new ArrayList<Integer>();
 
-        final List<Bits> bits = new ArrayList<Bits>();
-        final List<Integer> starts = new ArrayList<Integer>();
-
-        final int maxDoc = new ReaderUtil.Gather(r) {
+      final int maxDoc = new ReaderUtil.Gather(r) {
           @Override
-          protected void add(int base, IndexReader r) throws IOException {
+            protected void add(int base, IndexReader r) throws IOException {
             // record all delDocs, even if they are null
             bits.add(r.getDeletedDocs());
             starts.add(base);
           }
         }.run();
-        starts.add(maxDoc);
+      starts.add(maxDoc);
 
-        assert bits.size() > 0;
-        if (bits.size() == 1) {
-          // Only one actual sub reader -- optimize this case
-          result = bits.get(0);
-        } else {
-          result = new MultiBits(bits, starts);
-        }
-        r.storeDelDocs(result);
+      assert bits.size() > 0;
+      if (bits.size() == 1) {
+        // Only one actual sub reader -- optimize this case
+        result = bits.get(0);
+      } else {
+        result = new MultiBits(bits, starts);
       }
+
     } else {
       result = null;
     }
diff -r ffd225664560 -r 2720015f5883 lucene/src/java/org/apache/lucene/index/SegmentMerger.java
--- a/lucene/src/java/org/apache/lucene/index/SegmentMerger.java	Wed Aug 11 21:33:28 2010 +0000
+++ b/lucene/src/java/org/apache/lucene/index/SegmentMerger.java	Wed Aug 11 19:34:22 2010 -0400
@@ -647,10 +647,7 @@
     // NOTE: this is silly, yet, necessary -- we create a
     // MultiBits as our skip docs only to have it broken
     // apart when we step through the docs enums in
-    // MultidDcsEnum.... this only matters when we are
-    // interacting with a non-core IR subclass, because
-    // LegacyFieldsEnum.LegacyDocs[AndPositions]Enum checks
-    // that the skipDocs matches the delDocs for the reader
+    // MultiDocsEnum.
     mergeState.multiDeletedDocs = new MultiBits(bits, bitsStarts);
     
     try {
diff -r 8f66a89eec11 -r 126e01e8f085 lucene/src/test/org/apache/lucene/index/TestIndexReader.java
--- a/lucene/src/test/org/apache/lucene/index/TestIndexReader.java	Thu Aug 12 06:34:13 2010 -0400
+++ b/lucene/src/test/org/apache/lucene/index/TestIndexReader.java	Thu Aug 12 06:51:44 2010 -0400
@@ -1146,6 +1146,35 @@
       dir.close();
     }
 
+    public void testMultiReaderDeletes() throws Exception {
+      Directory dir = new MockRAMDirectory();
+      RandomIndexWriter w = new RandomIndexWriter(random, dir);
+      Document doc = new Document();
+      doc.add(new Field("f", "doctor", Field.Store.NO, Field.Index.NOT_ANALYZED));
+      w.addDocument(doc);
+      doc = new Document();
+      w.commit();
+      doc.add(new Field("f", "who", Field.Store.NO, Field.Index.NOT_ANALYZED));
+      w.addDocument(doc);
+      IndexReader r = w.getReader();
+      IndexReader wr = SlowMultiReaderWrapper.wrap(r);
+      w.close();
+
+      assertNull(wr.getDeletedDocs());
+      r.close();
+
+      r = IndexReader.open(dir, false);
+      wr = SlowMultiReaderWrapper.wrap(r);
+
+      assertNull(wr.getDeletedDocs());
+      assertEquals(1, r.deleteDocuments(new Term("f", "doctor")));
+      assertTrue(wr.getDeletedDocs().get(0));
+      assertEquals(1, r.deleteDocuments(new Term("f", "who")));
+      assertTrue(wr.getDeletedDocs().get(1));
+      r.close();
+      dir.close();
+    }
+
     private void deleteReaderReaderConflict(boolean optimize) throws IOException {
         Directory dir = getDirectory();
 
@@ -1247,7 +1276,6 @@
         dir.close();
     }
 
-
     private void addDocumentWithFields(IndexWriter writer) throws IOException
     {
         Document doc = new Document();
diff -r ffd225664560 -r 2720015f5883 lucene/contrib/misc/src/java/org/apache/lucene/index/MultiPassIndexSplitter.java
--- a/lucene/contrib/misc/src/java/org/apache/lucene/index/MultiPassIndexSplitter.java	Wed Aug 11 21:33:28 2010 +0000
+++ b/lucene/contrib/misc/src/java/org/apache/lucene/index/MultiPassIndexSplitter.java	Wed Aug 11 19:34:22 2010 -0400
@@ -205,7 +205,6 @@
       if (oldDels != null) {
         dels.or(oldDels);
       }
-      storeDelDocs(null);
     }
 
     @Override
diff -r ffd225664560 -r 2720015f5883 lucene/src/java/org/apache/lucene/index/IndexReader.java
--- a/lucene/src/java/org/apache/lucene/index/IndexReader.java	Wed Aug 11 21:33:28 2010 +0000
+++ b/lucene/src/java/org/apache/lucene/index/IndexReader.java	Wed Aug 11 19:34:22 2010 -0400
@@ -1304,16 +1304,4 @@
   Fields retrieveFields() {
     return fields;
   }
-
-  private Bits storedDelDocs;
-
-  /** @lucene.internal */
-  void storeDelDocs(Bits delDocs) {
-    this.storedDelDocs = delDocs;
-  }
-
-  /** @lucene.internal */
-  Bits retrieveDelDocs() {
-    return storedDelDocs;
-  }
 }
diff -r ffd225664560 -r 2720015f5883 lucene/src/java/org/apache/lucene/index/MultiFields.java
--- a/lucene/src/java/org/apache/lucene/index/MultiFields.java	Wed Aug 11 21:33:28 2010 +0000
+++ b/lucene/src/java/org/apache/lucene/index/MultiFields.java	Wed Aug 11 19:34:22 2010 -0400
@@ -103,31 +103,27 @@
     Bits result;
     if (r.hasDeletions()) {
 
-      result = r.retrieveDelDocs();
-      if (result == null) {
+      final List<Bits> bits = new ArrayList<Bits>();
+      final List<Integer> starts = new ArrayList<Integer>();
 
-        final List<Bits> bits = new ArrayList<Bits>();
-        final List<Integer> starts = new ArrayList<Integer>();
-
-        final int maxDoc = new ReaderUtil.Gather(r) {
+      final int maxDoc = new ReaderUtil.Gather(r) {
           @Override
-          protected void add(int base, IndexReader r) throws IOException {
+            protected void add(int base, IndexReader r) throws IOException {
             // record all delDocs, even if they are null
             bits.add(r.getDeletedDocs());
             starts.add(base);
           }
         }.run();
-        starts.add(maxDoc);
+      starts.add(maxDoc);
 
-        assert bits.size() > 0;
-        if (bits.size() == 1) {
-          // Only one actual sub reader -- optimize this case
-          result = bits.get(0);
-        } else {
-          result = new MultiBits(bits, starts);
-        }
-        r.storeDelDocs(result);
+      assert bits.size() > 0;
+      if (bits.size() == 1) {
+        // Only one actual sub reader -- optimize this case
+        result = bits.get(0);
+      } else {
+        result = new MultiBits(bits, starts);
       }
+
     } else {
       result = null;
     }
diff -r ffd225664560 -r 2720015f5883 lucene/src/java/org/apache/lucene/index/SegmentMerger.java
--- a/lucene/src/java/org/apache/lucene/index/SegmentMerger.java	Wed Aug 11 21:33:28 2010 +0000
+++ b/lucene/src/java/org/apache/lucene/index/SegmentMerger.java	Wed Aug 11 19:34:22 2010 -0400
@@ -647,10 +647,7 @@
     // NOTE: this is silly, yet, necessary -- we create a
     // MultiBits as our skip docs only to have it broken
     // apart when we step through the docs enums in
-    // MultidDcsEnum.... this only matters when we are
-    // interacting with a non-core IR subclass, because
-    // LegacyFieldsEnum.LegacyDocs[AndPositions]Enum checks
-    // that the skipDocs matches the delDocs for the reader
+    // MultiDocsEnum.
     mergeState.multiDeletedDocs = new MultiBits(bits, bitsStarts);
     
     try {
diff -r 126e01e8f085 -r 6397fc3194af lucene/src/test/org/apache/lucene/index/TestIndexReader.java
--- a/lucene/src/test/org/apache/lucene/index/TestIndexReader.java	Thu Aug 12 06:51:44 2010 -0400
+++ b/lucene/src/test/org/apache/lucene/index/TestIndexReader.java	Thu Aug 12 06:53:16 2010 -0400
@@ -53,7 +53,6 @@
 import org.apache.lucene.store.LockObtainFailedException;
 import org.apache.lucene.store.MockRAMDirectory;
 import org.apache.lucene.store.NoSuchDirectoryException;
-import org.apache.lucene.store.MockRAMDirectory;
 import org.apache.lucene.util.LuceneTestCase;
 import org.apache.lucene.util._TestUtil;
 import org.apache.lucene.util.BytesRef;