Placing Ironclad Door on top of Reinforced Wood Door

I was looking to upgrade an existing Reinforced Wooden Door to an Ironclad Door. Seeing no option in the Building Designer to do this I simply placed the new Ironclad Door on top of the existing Reinforced Wood door.

Though the door is placed successfully and the hearthlings can use it with no issues the graphical display of the door is glitchy (see screenshot) and I don’t believe the the existing Reinforced Door has been placed back in the stockpile.

In addition what is the correct way to upgrade existing doors?

Steps to reproduce:

  1. Place Ironclad door on top of existing Reinforced Wooden Door.

Version Number and Mods in use:
Release-687 (x64)

System Information:
Windows 10