So I've got a new Heir that I've been thinking of Mut/Heritage Repping, I recently learned what it is and have never done it before.

While learning about what repping is, someone said this on some forum:

in the screen where you retire and choose a new king there is a drop down that as a few choices on it one will take the appearance of the new cub and one will keep the appearance of the current king. if you want to mut rep you would select keep current appearance the king will keep the appearance (base, eyes, skin, marks) of the king you are currently retiring. you would then choose a lion with a mutation and your new king will gain that mutation along with the stats, and heritage of the lion with the mutation.

What I'm confused about is, when you click "Keep Current King Appearance" does it just mean you ONLY look like your old king, or does it kind of just reincarnate them so that you can continue breeding their markings/base/skin/eyes/etc but with your new heirs mut/heritage/stats? I'm very worried about trying this because my heir is an extinct RLC and I don't want to risk wiping them on accident.

Whoever helps me out on this can get 3 refunded breeding's from them they're a 3.16.18 clone.