Updating a video still shows old data in the backend

[e-anima]

I used this as an example.
https://github.com/youtube/api-samples/blob/master/php/update_video.php

What happens here is that the video description or the title that i change using the api will show up if you call the public video url.
If i go to the backend and edit the video in the "YoutubeStudio" i still see the old title and the old description. Very weird that can´t be right. I also waited 24 hours because i thought maybe its some caching issue. Stil the same.

[e-anima]

Ok the answer is. You need to wait 24 hours, then the new data shows up in the backend.