Place all objects in your layout on the same layer. Then click on the home tab. Then click on select all. Then right click on the layout and click copy. Open a new blank layout. Right click anywhere on the layout and select paste. All objects will maintain the same properties as the ones in the original layout.
Another quick way is to simply make every object in the first layout global. Then create an instance variable for each object. Place each object at layer 0. Creat an event sheet that has compare instance variables for each object (i.e, if instance variable = 0 then set object to layer 0, if instance variable >/= 1 set object layer to 1) Then include that event sheet to the event sheet for each level. Make sure each level/layout has at least 2 layers (layer 0 and layer 1, the active layer) Then for each individual level's event sheet have add action as "on start of layout" then an event for each object you want on that level by either adding or subtracting 1 from its instance variable...in essence setting its visibility (layer 1) or hidden behind the scenes (layer 0).