I'm having a problem with plans sent to layout sheets. For instance, I send a first floor plan from the Working Layer Set to a layout sheet and save it the layout as A01. Then I go up a floor to the 2nd floor plan and send that to a new layout sheet and save it as A02 and close it. But, when I go back and open layout sheet A01, it is now displaying the 2nd floor plan, same as A02. How do stop this so that the I can isolate separate level plans from the Working Layer set on separate layout sheets? Thanks