When replacing Studio videos, the new video does not go to the correct place, but rather places itself at the bottom of the page.

[GS_538]

I have three courses, where one (in English) was translated into Spanish and Portuguese. Videos also got copied in its original state (English) to the Sp and Pt courses. 

Now I need to replace the videos in En with dubbed videos in relative languages.

Every time I replace the video on a page, it does not get into the place that was created for it. Same behaviour when I remove the original video prior to the placement of a new video, or not. The new video gets placed at the bottom of the page every time. 

Please advise what it is and how I can fix it. Thank you!