Base loading under map

How do i get the save building to place at the same level as the ground? example when i load a save some of it is under ground. i know when i use to use copy paste i had to put a height to it. is there a auto height. i am using a random seed for a map as i like testing building on hills and in valleys and so on. Also am i the only one when i hit r it will delete multiple foundations at one?

Changed Status from Pending to Work in Progress

Changed Fixed In to 2.020

Changed Status from Work in Progress to Closed

Changed Fixed In from 2.020 to 2.0.25

thank you i will test this out tonight