How get the collection's entry ID through a Relation?

System Information
  • Strapi Version: 4.6.1
  • Operating System: Windows 10
  • Database: sqlite
  • Node Version: 16.16.0
  • NPM Version: N/A
  • Yarn Version: 1.22.19

Hi everyone!
I hope you’re doing well.

So, I’m creating a database-driven website about Portuguese dubs and using Strapi as backend and CMS.
I created a collection type name Movies that has, amongst other things, a repeatable component for the cast.
This repeatable component is made of a relations component with the Voice Actors collection (one to one) and a text field with the character he played.

When I call the API for a certain movie and populate Cast, it retrieves me the cast. However, it retrieves me the wrong ID for the Voice Actor.

For example, my Voice Actors’ ID go from 16 to 20, whoever the API is returning 10, 11, 12…

How do I retrieve the Voice Actors’ ID?