Index: _source/plugins/wysiwygarea/plugin.js
===================================================================
--- _source/plugins/wysiwygarea/plugin.js	(revision 5289)
+++ _source/plugins/wysiwygarea/plugin.js	Fri Mar 26 15:36:20 CST 2010
@@ -170,6 +170,11 @@
 		}
 	}
 
+	function isBlankParagraph( block )
+	{
+		return block.getOuterHtml().match( emptyParagraphRegexp );
+	}
+
 	var isNotWhitespace = CKEDITOR.dom.walker.whitespaces( true );
 
 	/**
@@ -206,19 +211,21 @@
 				first && isNbsp( first ) && first.remove();
 			}
 
-			// If the fixed block is blank and already followed by a exitable
-			// block, we should revert the fix. (#3684)
-			if ( fixedBlock.getOuterHtml().match( emptyParagraphRegexp ) )
+			// If the fixed block is actually blank and is already followed by an exitable blank
+			// block, we should revert the fix and move into the existed one. (#3684)
+			if ( isBlankParagraph( fixedBlock ) )
 			{
 				var previousElement = fixedBlock.getPrevious( isNotWhitespace ),
 					nextElement = fixedBlock.getNext( isNotWhitespace );
 
 				if ( previousElement && previousElement.getName
 					 && !( previousElement.getName() in nonExitableElementNames )
+					 && isBlankParagraph( previousElement )
 					 && range.moveToElementEditStart( previousElement )
 					 || nextElement && nextElement.getName
-					   && !( nextElement.getName() in nonExitableElementNames )
+						&& !( nextElement.getName() in nonExitableElementNames )
+						&& isBlankParagraph( nextElement )
-					   && range.moveToElementEditStart( nextElement ) )
+						&& range.moveToElementEditStart( nextElement ) )
 				{
 					fixedBlock.remove();
 				}