Another option instead of upgrading in place. In the future keep a backup of all configs changed. Should probably keep them documented as well as to why you did it in the first place. Learned that the hard way some time ago. At the very least just backup the entire /etc/ and /home/"$USER" folders then chase down your config files after the fresh installation. I've even heard of some keeping their configs in git or a local svn or whatever. Suppose it works. Never tried it myself.
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