Dennis Ploetner

MSLS uses WordPress’ standard metatables for its data. So I believe that is good for backups and export/import related things. Or do you need something different?

I’d say that you can start from here: http://msls.co/user-docs/plugin-configuration.html#choose-the-blog-language

Are you sure that those blogs have different languages codes? It sounds like a problem in your setup.

Bitte die Permalinks auffrischen und noch einmal überprüfen!

I remember an update because of an issue with WooCommerce product categories but I don’t know if it was fully resolved.

Der PHP-Code sollte in der functions.php des (Child)Themes untergebracht werden. Man kann das in etwa so machen:

function my_msls_options_get_permalink( $url, $language ) {
	switch ( $language ) {
		case 'de_DE':
			$url = str_replace( '/bildaufhaenger/', '/picture-hangers/', $url );
			$url = str_replace( '/bildaufhaenger/', '/accroches-tableaux/', $url );
		case 'fr_FR':
			$url = str_replace( '/accroches-tableaux/', '/bildaufhaenger/', $url );
			$url = str_replace( '/accroches-tableaux/', '/picture-hangers/', $url );
		case 'en_EN':
			$url = str_replace( '/picture-hangers/', '/bildaufhaenger/', $url );
			$url = str_replace( '/picture-hangers/', '/accroches-tableaux/', $url );
	}

	return $url;
}

add_filter( 'msls_options_get_permalink', 'my_msls_options_get_permalink', 10, 2 );

Ok then 😉

No problem. It sounds like that the server runs out of memory. How much memory has PHP to execute a script? DO you have access to the server logs?