Import Data Error

When some issues's comment or description contains "]]>",
the xml file that JIRA automatic backup can't be imported.

I found the xml file's format is not correct, I have to modify manual like this:

<description>Data]]>Data2</description>

------>

<description>Data]]]]><![CDATA[>Data2</description>

And this problem only occur in jira 3.0, JIRA 2.6 is OK.