How to link from admin bar to users site when on main site?

I have installed the Custom Admin Bar plugin and it works great. The problem I am having is with the custom links I have created in my multisite install.

An example is a custom link I made to "Add Products". It links correctly for a user, unless they are on the main site. It then tries to go to the product page for the main site. Is there something I need to place before the "post-new.php?post_type=product" to show I want it to go to the current logged in users site no matter what page they are currently on?