WP network multisite support?

WP makes testing against multi-site installs extremely difficult due to its port limitations, so support for it has not been tested much. Some of the customizations used for a multi-site setup can be added via the menu config: https://code.google.com/p/wordpress-custom-content-type-manager/wiki/Config_admin_menu but I can’t say for sure if that can be customized to support what you need. Although less efficient, you can export the content type definitions and import them on the subsites.

The menus does work on other sites in the network, but the data are not there. They all work independently from each other. It would be great if there is an option to have all the sites access to the same data as the main site.

Make a feature request in the issue tracker so this can be properly tracked.