Key in transform secret engine


While exploring the transit engine, I find there is a named encryption key used to encrypt data and this key can be rotated.

Is there a similar key present in the transform engine? If so how can it be rotated?

I think that functionality might be the tweak value in transform?

If tweak source is supplied or generated, wouldn’t the responsibility of managing the tweak value lie with the user as opposed to the vault?

If we encrypt a password with tweak Value A and later change it to tweak value B,
shouldn’t the user be responsible to decode with the second tweak vaule as opposed to the first?