iTunes Connect can't see my BundleID

I am trying to submit a revised iPhone app for release on iTunes. I’ve tested the app in as many configurations as possible and created and saved an iTunes Connect record. But I can’t find a way to get the latest build to appear in the dialogue window of iTunes connect. When I click on Build ⊕ or click on the link Select a build before you submit your app I only see the previous build. I’ve renamed the bundleID for the latest build in Xcode but I can’t make this appear in the iTunes Connect dialogue window. What do I need to do ?