I try to upgrade Jira (6.1.2->6.3.3), but not in place, but on a different server. So what I did:
- install a new server with a new (and empty) Jira Agile (v6.3.3)
- I exported the data from the current Jira (v6.1.2)
- I tryed to import the data on the new server
Unfortunately this import fails. 
jira import Table 'jiradb.AO_60DB71_RAPIDVIEW' doesn't exist
Is it because I try to export/import data between different Jira versions? First I tought it's because of different plugins, but the I tried to install all the currently used plugins (which is not obvious, seems some of the plugins become "system plugin"), but the result is the same.
What's the proper way to make an upgrade like this? Should I install a 6.1.2 on the new server and upgrade it after the import? Or is it not about the versions?
Thanks,
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Robi