I am trying to upgrade my Ubuntu to the latest version (already running Zimbra 8.7.1) but having problems.
There is not a lot of documentation that i can find regarding this upgrade, so i have been following some similar documents that i can find:
https://wiki.zimbra.com/wiki/Ubuntu_Upgrades
The issue i am having, after a successful Ubuntu upgrade Zimbra will not reinstall / detect the old installation.
- I download Zimbra 8.7.1 for Ubuntu 16.04
- Extract and run through the install with .\install.sh -s --skip-activation-check
All the documents i have found say that the installer should prompt for an Upgrade - this is not the case.
The installer does not locate any of the old Zimbra installations:

Am i doing something wrong? Is this expected behavior? how do i get my Zimbra reinstalled with config / mailboxes etc intact?
Thanks
Daniel