@Cayo or @Kuo should be able to help you. Or maybe @Maurizio if he’s more available.
I don’t speak your language so it’ll be easier with one of them! Please wait until someone comes
I don’t speak Spanish either so I’d like to be sure I understood your request:
Are you asking if
it’s possible to have all your tracks in the same artist profile?
Yes, in that case I’d need the links to the release you want to move, + the wrong and the correct channel
it’s possible to add more tracks to an existing release?
It’s not possible to change the number of tracks of an existing release. What you can do is creating a new release that includes the old tracks + the new ones. If you want you will then be able to take down the previous release.