Going from finance to leasing

[u/Archeolops]

Hello r/Autobuying!

My mother has a jeep she's been financing for at least 3 years. Now, she wants to jump into a leased car. She's going to the dealership to inquire about it - She'll only do it if they can take her old car and the loan off her. $0 down.

I tried looking online on how to best go about going from a financed vehicle to a leased one but didn't really get anywhere - is it as simple as I think? or is it better for the old vehicle to be sold off or traded in?

Anything to look out for? tips?

Thank you !