Upgrading from Versions of JIRA Prior to 3.1 Results in 'SAXParseException The Character Sequence' Error
When importing an XML backup made in JIRA 3.1 or lower into a newer version of JIRA, the import fails with following error:
Exception occurred: org.xml/sax.SAXParseException: The character sequence "]]>" must not appear in content unless used to mark the end of the CDATA section.
JIRA versions prior to 3.1 generate XML backups containing incorrectly escaped
CDATA sections. See JRA-4980.