I am in the process of moving our existing instances of jira and confluence over to a 64-bit RHEL server, due to the issue with confluence version upgrades only being 64-bit going forward. Currently we have version 7.2 of jira running on the 64-bit server. Today I tried to do an upgrade to version 7.4 and it ended up deleting ALL of the subfolders below the jira folder on the server. Last week I tried the same thing on this server; going from version 5 to 6 of confluence and the upgrade deleted ALL of the subfolders below the confluence directory. I have only been working with Atlassian products for a little over 5 years but I have NEVER seen anything like this happen on an upgrade. Any thoughts out there? This is way bizarre!