I logged in on Cataclysm Classic after a few weeks break and noticed my reputation with ‘The Earthen Ring’ has been reset to Neutral and my reputation with ‘Therazane’ has been removed completely. My exploration of the Deepholm zone has also been reset, and it looks like my quest progress in the zone has reset too.
I have not used any server transfer or similar service.
Character: Dumpis (lvl 85 Death Knight) on Firemaw EU.