iOS 5 and Yahoo Contacts Sync
I have an iPhone 4, and had been using CardDav to sync my contacts with my Yahoo account with no problems (two-way sync worked perfectly). I upgraded to iOS 5 over the weekend, and was delighted to see that the Yahoo mail integration now supported contacts (in addition to mail and calendar but no contacts as was the case with iOS 4.2). After removing the CardDav account and turning on the Contacts option under the Yahoo Mail account, I noticed that the contacts synchronization now happens only one way. That is, if I add a contact on my iPhone or make changes to a contact on my iPhone, those change get pushed almost immedeately to my Yahoo contacts. However, if I add a contact in my Yahoo address book (on the actual Yahoo site) or make changes to a contact on Yahoo, the changes do not get pushed to my iPhone.
I tried removing the Yahoo account from my iPhone altogether, verified that all data was wiped as a result, and restarted the phone, and then added back the Yahoo account, but the same behavior persists.
I also tried pressing what looks like a refresh button in the top left part of the address book on my iPhone (when viewing the list of contacts), but after seeing the data activity "swirl" in the status bar, there are still no updates from Yahoo. It's been more than a day since these changes were made, which is more than enough time for a Push to have taken place.
Is anyone else having this problem, or does anyone know if this is a bug with iOS 5?
iPhone 4, iOS 5