Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 5455)
+++ /CKEditor/trunk/CHANGES.html	(revision 5456)
@@ -73,4 +73,5 @@
 		<li><a href="http://dev.fckeditor.net/ticket/5237">#5237</a> : English text in dialogs' title is flipped when using RTL language.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/5632">#5632</a> : SCAYT word marker is not visible on text with background-color set.</li>
+		<li><a href="http://dev.fckeditor.net/ticket/3257">#3257</a> : Create list doesn't keep blocks as headings.</li>
 	</ul>
 	<h3>
Index: /CKEditor/trunk/_source/plugins/list/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/list/plugin.js	(revision 5455)
+++ /CKEditor/trunk/_source/plugins/list/plugin.js	(revision 5456)
@@ -235,4 +235,6 @@
 	}
 
+	var headerTagRegex = /^h[1-6]$/;
+
 	function createList( editor, groupObj, listsCreated )
 	{
@@ -286,6 +288,15 @@
 			var contentBlock = listContents.shift(),
 				listItem = doc.createElement( 'li' );
-			contentBlock.moveChildren( listItem );
-			contentBlock.remove();
+
+			// Preserve heading structure when converting to list item. (#5271)
+			if ( headerTagRegex.test( contentBlock.getName() ) )
+				contentBlock.appendTo( listItem );
+			else
+			{
+				contentBlock.copyAttributes( listItem );
+				contentBlock.moveChildren( listItem );
+				contentBlock.remove();
+			}
+
 			listItem.appendTo( listNode );