Hi Cameron, Hi Cameron, If your new Cabbage Palm Fern (Phlebodium aureum) seems happy and healthy 'd leave it in it's original container with the soil intact and just allow it to get acclimated to it's new surroundings. No need to change anything.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!