I’m looking into using Wordpress Multi-site to have a three separate wordpress sites on one installation of Wordpress.

I have a multisite WordPress with two sites in it (two languages), and I’m developing a theme for both of them.
I have a custom type (named ‘lesson’) that I want to have it shown in both of the sites.
So I ended up using pre_get_posts hook to reach my purpose, but the problem is when I change the blog id in this action, the other actions (and filters) don’t work anymore!