XML_Tree (2.0.0RC2): CData in Input-Files

Hi! I'm trying to parse, change and save XML Files like this: -------------------------- <source> <![CDATA[some cdata goes here ... ]]> </source> <anothertag>simple data here...</anothertag> -------------------------- When I altered and save the file, the CDATA-mark is lost. Of course I can change the node's use_cdata_section by hand (after parsing the input file) - but I have to do this for every node which originally had a CDATA-mark and there is no proof, that the content is parsed correctly. Basically I want to read the file, alter some tags and write the file back to disk without any other changes I didn't explict request ;-) Is there any solution for this problem? Best regards Alexander Menk