I recently switched from local contacts to Google Contacts and use kde-misc/akonadi-google-20120619. To migrate all my local contacts I exported them into a vCard and uploaded that vCard to Google. The birthday field was correctly set in the vCard and imported into Google Contact. (If I look at the contact via the Google web interface.) But if I a look at the same contact in kontact-4.8.3 (via kde-misc/akonadi-google) the birthday is not shown. If I edit the birthday field in kontact-4.8.3, these updates are not synchronized with google. The birthday is shown as long as Kontact uses the local cash for this contact, but as soon as the contact is reloaded from google the birthday field is empty again. Reproducible: Sometimes Steps to Reproduce: 1. Create a contact in Google GMail with a non-empty birthday field 2. Open this contact in kontact via kde-misc/akonadi-google Actual Results: Birthday field is empty Expected Results: Non-empty birthday
kde-misc/akonadi-google is moved with KDE SC 4.9 to net-libs/libkgapi, so the old lib (kde-misc/akonadi-google) wont get any updates by upstream in future. You can check the application behaviour when you are updating to KDE SC 4.9 again with the new lib net-libs/libkgapi. Please note that the reported issue is not a packaging issue by Gentoo, so you should report it to upstream directly.
Upstream bug: https://bugs.kde.org/show_bug.cgi?id=305374
FYI + 20 Aug 2012; Johannes Huber <johu@gentoo.org> +libkgapi-0.4.2.ebuild: + Version bump. Upstream Changelog > fixed removing reminders from events > fixed Bug 301889 - Automatically fill username in Auth dialog when > reauthenticating > fixed Bug 305374 - Fix contact birthday synchronization > fixed Bug 305375 - Fix contact display name style synchronization