Index: /CKEditor/branches/versions/3.5.x/_source/plugins/htmldataprocessor/plugin.js
===================================================================
--- /CKEditor/branches/versions/3.5.x/_source/plugins/htmldataprocessor/plugin.js	(revision 6201)
+++ /CKEditor/branches/versions/3.5.x/_source/plugins/htmldataprocessor/plugin.js	(revision 6202)
@@ -41,6 +41,6 @@
 	function blockNeedsExtension( block, fromSource, extendEmptyBlock )
 	{
-		if( !extendEmptyBlock ||
-			typeof extendEmptyBlock == 'function' && ( extendEmptyBlock( block ) === false ) )
+		if( !fromSource && ( !extendEmptyBlock ||
+			typeof extendEmptyBlock == 'function' && ( extendEmptyBlock( block ) === false ) ) )
 			return false;