The Transifex.net instance appears to be not able to download source file (.pot), that cause translators work more to create a new po or to simply update their local po file; while the fedora one still provides the function to download the pot file.
In my opinion, although the new features provided by v1.1.0 instance are quite awesome (at least for me), there are still some flaws should be fixed as soon as possible to be the new translation platform for Fedora translators.