How do you prevent vessles that you Load via quicksave or tracking/map/distance changes from falling through the ground?

[Planetace]

I have parked objects on the Mun but they keep falling into oblivion and exploding when I load them.

[sal_vager]

I have not had this issue with any of my landed craft, I'd love to help but without more info I don't know what's going on.

Can you provide logs from these events and saves with vessels that show this issue as detailed in the stock support guide please?