Can not send a raised dragon to roost

[gustafrog]

How come you can send a baby dragon to roost if there is no raising space available, and you can send a raised dragon to roost when you already have one, but not send a raised dragon to roost when the habitat is full?

[[S8] Elsa]

Duplicate Dragons can be used in deliveries after you raise them or sold in the Marketplace to other players.

[gustafrog]

Yes but this is not a duplicate dragon. How come it cant be sent to roost, when theres space available there? Its possible to send a not-duplicate babydragon to roost, but not an adult one?

[[S8] Elsa]

You can only send duplicate adult Dragons to the Roost after you raise them. Dragons you don't already have will go to the habitat. If your habitat is full, you'll need to upgrade it first to make room.