[Brian]

Sorry for the confusion and inconvenience! Is it possible that the actions in question had outstanding edits on both the iPhone and Mac at some point? If so, it's possible this post explains what you saw.

If you don't think that's what happened, the best thing to do would be to zip up your database and email it to the support ninjas. We can look at your transaction tree and see exactly what happened. (So if there's a bug this will help us track it down and fix it.)