Ok, that's pretty much covered by my generic answer.
Find the backup file and put it somewhere safe. Stop, and then uninstall Confluence 4.3. Drop all tables from the database. Re-install Confluence 4.2. Log into it and look for the "import backup" option in the admin screens.
Have a quick look through https://confluence.atlassian.com/display/DOC/Site+Backup+and+Restore
If you know whare this file is, just install a new trial JIRA istance (same old version) and try to import it. In case you don't have it, perhaps you should raise a support ticket in order to find a better option.
I believe that you'll have to clone the database and fix the upgrade in a second instance.
Hello Community, Today we are going to talk about the three Scrum Roles. There is the Development Team, the Scrum Master and the Product Owner. In my opinion these three are all really impo...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs