we want to degrade the JIRA from V7.0 to V6.4,
but cann't succeed, the feed back is blow:
Error importing data: java.lang.IllegalArgumentException: [GenericEntity.set] "parameters" is not a field of
what can I do for importing successfully?
any addon can realize this?
There is no "downgrade" route.
There are ways you can bodge a number of minor releases to downgrade (like JIRA 6.4.3 to 6.4.1), but there's no chance of 7.x to 6.x
Your choices are to revert to the last backup you took from your 6.4 system (and lose all the data entered since) or run with your 7.x system.
This all begs the question - "Why are you trying to do a (pointless) downgrade?"
Ok, got it. However: One of our guys recently pointed a JIRA 7 installer to a JIRA 6.4 database by mistake. Needless to say it was then FUed. Trying to use the auto-export created by his JIRA 7 installer resulted in the same error message.... That's why I was making the comment.
Hard to say why that went wrong without seeing the error messages (and assuming you rebuilt the 6.4 from a clean install before trying to restore the export - downgrades don't work, you need to start clean)
It's worked fine for me on the couple of times I've wanted to test it. But I tend to disable the export when upgrading to speed it up, I work with large datasets a lot and prefer to rely on a hard database copy for speed and reliability.
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