I've made a drawing by using AutoCad 2014. In this drawing I have created several polygonal viewports in the layout. These viewports looks like the letter "L". When I look to the layout, after I opened the drawing with AutoCad 2015, the viewports are visible. The "L" shapes are visible but also parts of the drawing what should not be visible because it isn't located "in the viewport". It looks like AutoCad changed my polygonal viewports into rectangled viewports. Because you can't see anything on the left, right, above or bottom outside the maximum length of the "L" shape. The part I see is into the small rectangle, to make from the "L" shape a large rectangle..... In the picture below; the green color is the viewport. I do not want to see the text on the right side. Because I have several of these viewports, you'll see also text on the left side next to the viewport but also into the floorplan from the other viewport! I do not want to see that.  What's wrong? If I create a new viewport in thise shape, it also have this problem. Thanks everybody  

Why don't you just adjust the viewport using its grips?Did you assign a scale to the viewport?  Yes or No?Did you lock the viewport display?How much experience do you have using AutoCAD?

Hello John, Like I wrote; The green line is the viewport. I've created it using MVIEW; POLYGONAL. The viewport has got a standard and an annotion scale of 1:100 and yes it is locked.  It doesn't matter if I change the shape of the viewport using its grips. The part outside the viewport is still visible.Also if I unlock the viewport and regenerate the drawing.Nothing helps. But we have solved this problem. We had opened the drawing using AutoCad 2014. In the layout was everything oke. Nothing was visible outside the viewport. We saved the drawing again and opened the drawing using AutoCad 2015. The only part of the model, what we want to see in the layout, is visible!  I'm working daily with AutoCad since the year 2008. Version AutoCad 2007 was the first one.But this was the first time that I have had this problem with the viewports.