Xcode backward compatibility?

Xcode 4 uses the same project structure as Xcode 3. You can switch back and forth between them without any trouble.

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I want to upgrade my Xcode 3.2.3 to Xcode 4.0 but I want to confirm one thing about my current project code. Will upgrading cause problems with my current code? Can I still run the code made by Xcode 3.2.3 and run it and modify it with Xcode 4.0?

If you have experience regarding this please let me know. Xcode ios ios4 xcode4 xcode3.2.3 link|improve this question edited Mar 17 '11 at 14:39Paul R48.9k43288 asked Mar 17 '11 at 14:27dina 1158 40% accept rate.

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