How to import Site information from non portableapps Filezilla Client installation?

I have already a non-portableapps Filezilla client installation on my Win10 system but want to switch to portable apps Filezilla Client.
After download and extraction of pa version I imported previous FZ settings (from existing FZ installation).
The only file import offered was "filezilla.xml"

It worked only partially..

The layout was adjusted to the old FZ.

But the site manager information (shown in leftmost toolbar symbol) was NOT imported.
Existing site list is empty

Whats wrong?

How can I import really ALL stuff from previous FZ Client?
Peter