To ensure a seamless catalog migration from your previous distributor, follow the Venice Catalog Migration Guide. Also make sure to review and adhere to catalog migration best practices as they pertain to your existing catalog.
The metadata (album title, UPC, track title(s), ISRC(s), etc.) and audio files delivered to your old distributor needs to be the same. We can't guarantee everything will sync, but this is the best method to ensure so.