Deleting old projects - exclusive authors - selling elsewhere

[OsamaSayegh]

Couldn’t find any “official” page or article that answers your question directly, but I found this:

If I delete a song from my portfolio which has already generated sales, can I register the song in a PRO?

Authors retain complete ownership of their music, and while we’d of course prefer they keep it on the marketplace and completely royalty free. You certainly have the right to remove it at any time, once removed use/register it as you wish.

This question has been asked many times before in the forums, all the answers I saw were positive.