Horde raid team shows up as Alliance after server move

Odd issue going on here, we were previously members of Union-Kalcegos as their second raid team on the Horde side however we have recently moved our team to Mal’Ganis and formed our own guild and we show up as an alliance guild. How can I get this changed?

https://www.warcraftlogs.com/character/us/malganis/aurowene