package libapparmor1:amd64 2.11.0-2ubuntu17.1 failed to install/upgrade: package libapparmor1:amd64 is already installed and configured

[Swagman]

Borked upgrade from 17:10 to 18:04
I had to go into Recovery Root and enter dpkg --configure -a

On reboot it appears that it's trying to "reverse upgrade"

ie: Bionic to Aardvark

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: libapparmor1:amd64 2.11.0-2ubuntu17.1
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.3
AptdaemonVersion: 1.1.1+bzr982-0ubuntu17.1
Architecture: amd64
Date: Fri Jul 20 12:37:22 2018
Dependencies:
 gcc-8-base 8-20180414-1ubuntu2
 libc6 2.27-3ubuntu1
 libgcc1 1:8-20180414-1ubuntu2
ErrorMessage: package libapparmor1:amd64 is already installed and configured
InstallationDate: Installed on 2017-04-14 (461 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
ProcKernelCmdline: BOOT_IMAGE=/vmlinuz-4.15.0-29-generic root=UUID=b2e062fa-0b84-4021-a7c2-f94622f1632b ro nomodeset quiet splash vt.handoff=7
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3ubuntu1
PythonDetails: /usr/bin/python2.7, Python 2.7.14, python-minimal, 2.7.14-2ubuntu1
RelatedPackageVersions:
 dpkg 1.18.24ubuntu1
 apt 1.5.2
SourcePackage: dpkg
Syslog:
 Jul 20 11:12:33 TopCat dbus[988]: [system] AppArmor D-Bus mediation is enabled
 Jul 20 15:03:01 TopCat dbus[918]: [system] AppArmor D-Bus mediation is enabled
Title: package libapparmor1:amd64 2.11.0-2ubuntu17.1 failed to install/upgrade: package libapparmor1:amd64 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.