When I select a world, and then click Reset World, I can upload an existing world. But when the upload is done, the name of the world and the icon do not change. But when I try to play on the world, the new world is there. If I log out of minecraft and back in, the text and image still don't change.

Steps to Reproduce

1. Go to Configure Realm
2. Select the world that you want to reset (The Zoo)
3. Click Reset World
4. Click Upload World
5. Select world to upload
6. Wait for upload, click done
7. Return to realms config page - The Zoo thumbnail and text is still present.