Design App: Settings overwritten by NC Updates

Why are the settings for Logo, Logoheader etc. overwritten by every NC updates?
Background- and Login-Image is kept, other files are always overwritten…

This is annyoing…

how to protect these files from being overwritten after every update?

What version of NC? Back in NC25 (no longer supported) there was a migration bug in theming.

I saw this in version 27.1.5 and the 2 versions before

the dashboard logo, the favicon etc.
Even when I upload a new favicon it does not replace the NC-favicon

See here: