Removed MY_APP.app file

I moved MY_APP.app file by mistake, in Xcode Project Navigator, under开发者_开发百科 "products" folder, it seems red now, what will be the consequences?

And how can I bring it back?

When I build and run the project in iPhone simulator it doesn't come back.

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Delete the red marked file(which means that is not located physically).Reset the simulator and clean all targets. Build first and then run should work.