Index: /CKEditor/trunk/_source/plugins/htmldataprocessor/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/htmldataprocessor/plugin.js	(revision 6278)
+++ /CKEditor/trunk/_source/plugins/htmldataprocessor/plugin.js	(revision 6279)
@@ -123,6 +123,6 @@
 				[ ( /^data-cke-(saved|pa)-/ ), '' ],
 
-				// All "data-cke" attributes are to be ignored.
-				[ ( /^data-cke.*/ ), '' ],
+				// All "data-cke-" attributes are to be ignored.
+				[ ( /^data-cke-.*/ ), '' ],
 
 				[ 'hidefocus', '' ]