Find blogID and URL
wp site list |grep maple
export BLOGID=73
Run command
wp libpress-export-blogmenus --blogid=$BLOGID
Saves backup file in WXR format to path specified in MENU_MGMT_EXPORT_DIR, organized by Blog domain.
Defaults to /home/siteuser/libpress_menu_backups/{domain}/ on LibPress.
wp libpress-export-blogmenus --network
Full cron run, for example:
cd /var/www/libpress.libraries.coop/current && /usr/local/bin/wp libpress-export-blogmenus --network &>/dev/null && gzip /home/siteuser/libpress_menu_backups/*/*.xml
Normally, without all pages/posts/terms linked to from the menu items, an import would fail and only import custom links. This plugin now includes functionality that dynamically adds referenced posts/terms from the menu into the importer, thus allowing an export with only menu items to be imported.
There are limitations however, insofar as a post/page/term may have been deleted between the export and the import. Efforts have been made to log errors when this occurs, but edge cases may exist where they are missed. Even when these errors are logged, if the missing item has child items, your menu probably doesn't look how it did when exported, so be aware of that.
Importing is a simple matter of
wp libpress-import-blogmenu /the/path/to/the/exportfile.xml
The blog URL will be pulled from the export file, so no other parameters are required. In addition, the XML file can also be imported via the normal WP Importer web interface.