For truly mounted plant there is no repotting. The ones I have mounted to posts and cork slabs have latched onto the mount and the roots grow like they would in nature, just running all over the mount.
The ones I put in moss in coir baskets I never 'repot', if i feel like I need to I can attach another rmossfilled basket to the underside.
Pastazanum is a terrestrial philo though. I would not have thought to leave it in moss. It is a very popular landscaping plant in South Florida where those lucky brutes can plant it out in the yard, where it will fill a flowerbed. I don't have Pasta but I have Plowmanii and Mamei and I have both of those in the ground...they creep and tunnel and send up new plants sometimes 2-3 ft away from the last plant so pot culture for them never occurred to me
