iOS Clean all targets / Updating an app

[orangeiris]

Apple has recently updated the iPhone Developer Program Portal. I thought at one time I read something about needing to "clean targets" before updating an app. But I can't find that reference now. All it mentions under "Updating your Application" is that you need to use the same Distribution Provisioning Profile and increment the CFBundleVersion and CFBundleShortVersionString values in your project Info.plist file.

Anyway, I'm preparing an update to an app. Is there anything special I need to do before jumping back into the code, other than switch from "Distribution" mode to "Debug" mode? Should I delete the existing build?

Thanks!