Migrating configuration and data files for sandboxed apps

Thank you very much, that is exactly the clarification / unambiguous wording I wanted to see documented.
Plus WRT its content it is exactly what I hoped for (but became seriously wary).

And as you are the chief designer of SailJail AFAIU, I assume that this also is the intended behaviour, even if the implementation may deviate, right?

P.S.: I am really glad that this is fine on this abstract level, for the more specific / detailed questions and concerns, see the other, older thread.