--- a/src/main/java/app/bbs/BullentInBoardJungleManager.java	Sat Jan 11 08:10:41 2014 +0900
+++ b/src/main/java/app/bbs/BullentInBoardJungleManager.java	Sat Jan 11 08:40:55 2014 +0900
@@ -46,19 +46,23 @@
 				throw new IllegalStateException();
 			}
 		}
-		JungleTree tree = jungle.getTreeByName(treeName);
-		JungleTreeEditor editor = tree.getLocalTreeEditor();
+		Either<Error, JungleTreeEditor> either = null;
+		do {
+			JungleTree tree = jungle.getTreeByName(treeName);
+			JungleTreeEditor editor = tree.getLocalTreeEditor();
 
-		int pos = calculatePosition(tree.getRootNode(), netLog.getTimeStamp());
-		Either<Error, JungleTreeEditor> either = JungleUpdater.edit(editor, netLog, pos);
-		if(either.isA()) {
-			throw new IllegalStateException();
-		}
-		editor = either.b();
-		either = editor.success();
-		if(either.isA()) {
-			throw new IllegalStateException();
-		}
+			/* 
+			 * Merge. 
+			 */
+			int pos = calculatePosition(tree.getRootNode(), netLog.getTimeStamp());
+			either = JungleUpdater.edit(editor, netLog, pos);
+			if(either.isA()) {
+				throw new IllegalStateException();
+			}
+
+			editor = either.b();
+			either = editor.success();
+		}while(either.isA());
 		return either;
 	}