Just tried this out with a Pegassi Bati (almost fully modded goes for around $44k):
All that is different now is that at first your vehicle seems to disappear but returns back after you swapped out your character, and it makes you spawn on the street (last location) so you just have to walk up to the vehicle and can redo it.
Are you doing the "Swap Character" method?
Watch the video, and yes.
i did it with my bati after the latest patch and fetch 58K fully modded