This windows layout which you speak of is called a screenset (im sure you realized that)
And "revert" is the best way to go back to the original screenset. Now if your like me and you like to adjust different windows (The Multi-dock, Browser, Inspector, exc) then take advantage of those screensets by creating your own.
Once you have finished this layout, Lock the screenset from that same drop down menu you used to revert back to #5. you can create up to 10 different layouts and best of all...
you can import these screensets in to other projects so you don't need to set them up every single time.
This feature is one of Cakewalks best features. it cuts set up time in half.