You can follow the rapid upgrade method: https://confluence.atlassian.com/jira/upgrading-jira-using-a-rapid-upgrade-method-312738529.html
Not sure what do you mean by the second part of the question.
Just be aware of the changes in JIRA 7: https://developer.atlassian.com/jiradev/latest-updates/preparing-for-jira-7-0
Thank you for your quick answer @Nic Brough [Adaptavist].
I'm just testing it and I have not planned to use it in a Production environment because it's still an EAP version.
However I was looking for documentation and I didn't found any about it.
So, the standard upgrade process will be still valid? Executing the bin or exe file of the JIRA 7 version would upgrade the JIRA 6 version?
About the applications, if you have some applications, JIRA Core always store the items such as workflows?
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