For Apple you’ll need to follow a similar process as transferring a normal audio release, so you’ll need to upload it with us and have us distribute the apple music video through the create new video product and then once our version of the apple video has gone live, then you can take it down from your previous distributor.
Vevo is a little different and can work differently depending on the context of the videos delivery itself, but we have the form at https://www.jotform.com/form/243377303157052 which explains what we need you to do in either circumstance.