I have made two storyboards: one for iPhone and another for iPad. To create the iPad storyboard I have used size class wRegular hRegular. After fixing all my constraint issues, it works perfectly in preview, but when I restart Xcode some constraints are misplaced.

[Screen shot misplaced constraint while restart xcode](http://i.stack.imgur.com/TkY8P.png)

[Screen shot after updating the frame](http://i.stack.imgur.com/bcXMd.png)