Some music stores have very strict style guidelines as it relates to how music metadata is displayed on their sites. For example, Spotify does not allow for the displaying of "Featuring" artists anywhere in an album or track title. So if your tracks have Featuring Artists, for some stores (ie: iTunes or Apple Music) you might see your featured artist displayed in the track title and for other stores (ie: Spotify) you will not see your featured artists displayed in the track titles*. We realize this can be frustrating, however Catapult is required to comply with each and every music store's style guides or content will be rejected.
*Spotify will automatically display the Featured Artist's names next to the track title but without making any reference to them being "Featured". Additionally, the Primary Artist will be listed at the album level but will not be displayed at the track level since it is assumed that the Primary Artist at the album level is also the Primary Artist at the track level.