I don't understand but it worked. Thanks.

Thanks for the suggestions. I ended up creating a new identifier and profile, making sure to select an application bundle prefix that matched my team id.

I created a new certificate with my 'new' AppleID and the old/previous BundleID. I got an email indicating 'This will result in a loss of keychain access.' as mentioned above. I use Game Center but nothing else that might use Keychain. Hopefully this won't prevent approval of the app.

I'm asking the same question, I think. When I tried to upload the new version the App Store complained. "Request failed with error code "ENTITY_ERROR.ATTRIBUTE.INVALID.DUPLICATE.SAME_ACCOUNT", and reason "The provided entity includes an attribute with a value that has already been used on this account." It seems I can't edit the App bundle even after transferring it to my AppleID. Do I just need to use the old bundleID? Thanks, David