iPad simulator and Objective-C code

I was hoping to be able to utilize quick turnaround with Cocoa code within the iPad Simulator with Unity iPhone 1.7.

If I just build the project (from within Unity) and build in XCode as-is, it works.

If I start adding my own Objective C classes, it doesn't. It throws a link error:

".obj_class_name_MyClass", referenced from:
literal-pointer@__OBJC@__cls_refs@MyClass in AppController.o
Symbol(s) not found

The same code/project works if I set the player settings to build for the device instead of the simulator.

Is this expected and/or known behavior?

You have to add any new files you create to both the Unity-iPhone target as well as the Unity-iPhone-Simulator target.