Missing file warnings showing up after upgrade to Xcode 4

Question

I recently upgraded to Xcode 4 (which is a great upgrade) but now I\'m getting some warnings that I did not get before. I have looked through forums and other SO posts but

Answer 1

Dont delete the file directly in your .xcode folder. Delete files from xcode project navigator. (Right click on that file and choose move to trash).

Now, To clear this issue add same files in same location. And delete from the project navigator.