Hi,
we plan to upgrade from JIRA 6 to 7 and the check tells us not all addons are compatible, for example the Agile Addon. How to deal with that Addons? (We don't use them right now). It's for example JIRA Agile and Bitbucket Importer Plugin for JIM. And there are some unknown once: Atlassian Hipchat Integration Plugin and Atlassian Universal Plugin Manager Self-Update Plugin and some more...
We tried a planin update with a lot dependency and class not found errors... and reverted the vm snapshot 
What is the best way?
Thanks for ideas!