Build for editor not merging game modules

My game has 2 modules - a core module and a client module used for menus. They build just fine. However, the classes in the client module are not showing up in the editor. The classes in the core module do appear, so it seems the client module is missing from the editor build.

I have 3 Target.cs defined – Common, Client, Editor. What is produced from the build (using VS) is 3 dlls:

UE4Editor-MyGame.dll

UE4Editor-MyClient.dll

UE4Editor-Editor.dll

I don’t think this is right. I’m using Target and Build cs scripts modeled after the ones used in the UT demo. What is going here?