When I do an export and import the menus get transferred but I have to set the Site Navigation Menu manualy. Obviously it’s only a small detail but can I ask is this a bug or expected behaviour and is there any way to include the site navigation menu selection in the export file.
The same thing is the case for custom menu widgets.
The data for Currently Active Menus is not included in the exports (by default). This is because there is no guarantee the importing site will have the same theme (or same named menus).
If changing the menus was a big deal, you could export/import all the data straight out of the database. (This option is strongly discouraged!)