Group A use Jira 3.10.2 ,the database is PostgreSQL 8.2
Group B use Jira 5.0.2 , the database is Mysql 5.5
Now I want to export the content of Jira 3.10.2 and import it into Jira 5.0.2 , then Group A can use Jira 5.0.2 , How do I do can finish this purpose ?
Maybe I export PostgreSQL 8.2 library and import it into Mysql 5.5
Or I export XML from Jira 3.10.2 and import the XML into JIra 5.0.2
Please help me,thank you!