I emailed BI Support this question a week ago Friday, they answered the next day. This was from Jennifer, not Ken.Couple fo questions:
1. Now BI 6 is in the update screen in version 5, do you still need to uninstall version 5 or can you install version 6 from the update screen in version 5?
2. If you update to version 6 (either way) do you lose all your settings becasue BI is a pain to go through and re-configure with so many options / screens etc
You can really do either; install the full software from the Download page of the website, then uninstall the previous version, or you can uninstall first then reinstall the full software.
Your settings should also remain in place without exporting, but it's always safe to export them beforehand just in case.

