If you have resaved your branch settings, your build no longer uses xcrun to generate an .ipa file; it uses xcodebuild instead. Xcodebuild , unlike xcrun , doesn't allow generating an .ipa file if the build is not signed; unsigned builds produce an .xcarchive instead. If you wish to generate an .ipa file with the artifacts of an unsigned build, you can use the .xcarchive file to do so.
