That's not entirely true. First you'd need to clarify what you call "KDE".

There's no migration for the Plasma shell from Plasma 4 to Plasma 5, but the KDE applications migrate configurations when you go from a kdelibs4-based app to a frameworks5-based app.

Quite frankly, not migrating the Plasma shell configuration seems like a really minimal issue to me.

Of course one would need to actually use Plasma to know this. Please don't spread these kinds of rumors if you can't verify them directly ;)

>> George Standish:

“^ the Apple-school of upgrading, "just throw it out, and go buy another"”

And that's just absolutely unrelated.