I have an existing iPhone app and an iPad app, now I have created a Universal app, and I want to know if there is any way to kind of "merge" the existing app Ids, so I can upload my new app as an update for the previous ones.
Thanks!
No. I asked this question while at WWDC, of several Apple employees in the developer support group, and the answer is "not at this time, please file a bug report if this is a feature you'd like to see".