sheet to design model key-in?

Is there a key-in that will change a model from a sheet to a design? 

In v8 I had a little vba recorded that I would batch process on flattened files to change the sheet to design, so that when converting to dwg after, all info was in model space. 

As the model properties dialog has now been consumed into the general properties window this vba no longer works, and for some reason the macro recorder wont record the steps taken when I change this in thge properties window.