diff --git a/fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/impls/AbstractLSMRTree.java b/fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/impls/AbstractLSMRTree.java
index 9b377a9..f765c01 100644
--- a/fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/impls/AbstractLSMRTree.java
+++ b/fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/impls/AbstractLSMRTree.java
@@ -308,6 +308,8 @@
                     // insert between them.
                 }
             } else {
+            	ctx.modificationCallback.before(tuple);
+            	ctx.modificationCallback.found(null, tuple);
                 ctx.memRTreeAccessor.insert(tuple);
             }
 
@@ -329,7 +331,7 @@
                         .getMetaDataFrameFactory().createFrame(), 4, (BTree.BTreeAccessor) mutableComponent.getBTree()
                         .createAccessor(modCallback, NoOpOperationCallback.INSTANCE), btreeLeafFrameFactory,
                 btreeInteriorFrameFactory, memFreePageManager.getMetaDataFrameFactory().createFrame(),
-                rtreeCmpFactories, btreeCmpFactories, null, null);
+                rtreeCmpFactories, btreeCmpFactories, modCallback, NoOpOperationCallback.INSTANCE);
     }
 
     @Override
diff --git a/fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/impls/LSMRTreeOpContext.java b/fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/impls/LSMRTreeOpContext.java
index b8805d1..13ed5b4 100644
--- a/fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/impls/LSMRTreeOpContext.java
+++ b/fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/impls/LSMRTreeOpContext.java
@@ -60,7 +60,7 @@
         this.rtreeOpContext = new RTreeOpContext(rtreeLeafFrame, rtreeInteriorFrame, rtreeMetaFrame, rtreeCmpFactories,
                 rTreeHeightHint, NoOpOperationCallback.INSTANCE);
         this.btreeOpContext = new BTreeOpContext(memBtreeAccessor, btreeLeafFrameFactory, btreeInteriorFrameFactory,
-                btreeMetaFrame, btreeCmpFactories, NoOpOperationCallback.INSTANCE, NoOpOperationCallback.INSTANCE);
+                btreeMetaFrame, btreeCmpFactories, modificationCallback, NoOpOperationCallback.INSTANCE);
     }
 
     public void setOperation(IndexOperation newOp) {