This also answers: How do I hide Axiom products that aren't installed?
What displays on your Axiom menu is determined by the contents of a simple text file named aximenu.cfg. The aximenu.cfg can be modified in various ways to customize your Axiom menu, but in this article, we’ll show you how to prevent products that aren’t installed from displaying on the menu.
The default location for the aximenu.cfg is C:\Program Files (x86}\Axiom\V8\aximenu\
There are a couple of reasons.
Hiding uninstalled products from the Axiom menu is super easy. Open the aximenu.cfg, and near the top you’ll see a set of lines containing text “iftargetnotexist”. These lines control the display of the products in your menu.
Now save your changes and restart MicroStation to see the updated Axiom menu.