Guild Name has Changed - Logs Still Display Old Guild Name?

Hi there!

So we had a guild prior with logs we uploaded under the guilds old name on Kazzak-EU.
I am the GM and have my battle net linked but have no option to update the guild name?
We have raided a few times now and uploaded logs since also under the new name of on Kazzak-EU.
How can I change the guild name to Isolation on Kazzak EU and ensure all my future logs upload to the correct guild name accordingly?