I can create multiple Types from the same Model

(Incomplete Feature, Closed -> Fixed, Priority: High, Test Status: No automated tests yet , Reported By Justin du Coeur, )

Editor, Model Types

Summary: Currently, it is extremely easy to accidentally create multiple Types from the same Model. This is usually undesireable, and probably always a mistake. So let's plan to disable this for the time being, and we'll re-enable it if anybody comes up with a compelling use case.

Best approach is likely to not even make it an error, but silently DWIM. Instead, the Type list can include an attribute of the Model; if you ask to create a Model that already has a Type, we just use the existing one.

To make this more correct, the "New Type from Model" marker should become simply "Type from Model".

This is now near-impossible. The UI has been rejiggered so that you simply specify the Model you want -- you never explicitly say to create the Type.