>>57974650 I would do it to be safe, but I think those instances of peoples' saves being deleted were just due to user error (there was only a couple of reports of it happening around the Switch 2 launch and I don't think there's been any more). There's probably nothing to worry about if you do it right, but might as well be safe
I bought it on release day and I havent taken it out of its box yet. partially because of the anxiety I have of losing shinies ive had for 10-12 years in the transfer process