Fix for distupgrade from 14.04 to 16.04

[xor]

Hi,

the release notes for 16.04 at [1] say:

> WARNING: LTS to LTS upgrade to Xerus is currently problematic and should not
> be attempted. Please install a fresh copy of 16.04 instead. To prevent
> messages about upgrading, change Prompt=lts to Prompt=normal or
> Prompt=never in the /etc/update-manager/release-upgrades file.

Well fine, I have text file with the *full* list of settings I have applied 
when I first installed Kubuntu, so reinstalling in theory shouldn't be a 
problem.

Unfortunately that text file is > 100 pages long nowadays!
It would end up taking half a year for me to find the time to reconfigure a 
newly installed system.
That's just not possible for me currently, and even if it were it would cost 
me thousands of dollars worth of my time :(

What is the specific problem why it was recommended to reinstall?
Is there e.g. a bugtracker entry for it?
Is it fixed?
How can I help with fixing it?

Thanks!

[1] https://wiki.ubuntu.com/XenialXerus/ReleaseNotes