MY CONTENT contains 3 tabs: Catalog, Under Review and Drafts
Drafts is where we keep your content that you have not yet submitted for release. These are uploads that you've started in Manage Content but have not finished. You'll find any rejected drafts here, too.
After drafts are submitted for approval, they can be found in Under Review. You may make edits to submissions while they are Under Review, but please note that further changes need to be re-submitted for approval before they can be reviewed for distribution.
Once your content is approved for distribution, it will show up in Catalog organized by content type: albums, songs and videos. You may edit some aspects about an approved product. More details about that here How do I edit or update metadata after submission?