According to the XSLT 2.0 serialization spec, characters in elements listed in cdata-section-elements should not be subjected to character mapping. See
http://www.w3.org/TR/xslt-xquery-ser...ion/#serphases
However, this area of the spec is still undergoing some last minute refinement.
Which XSLT 2.0 processor/version are you using? It's probably best to raise this on the appropriate vendor list.
Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference