Real kit gets overwritten by replacement Kit

Steps to reproduce:
1 - Open a Qt Creator that is linked to a Qt installation
2 - Create and open template project with an autogenerated Kit from the Qt installation
3 - Close Qt Creator
4 - Open a Qt Creator that is not linked to a Qt installation
5 - Open the project created in step 2
6 - Check that a Replacement Kit is generated for the now absent Kit.
7 - Close that Qt Creator
8 - Open the Qt Creator from step 1
9 - Open the project from step 2
10 - Check the configured kits in projects mode

I got:

Side node: removing the Replacement Kit in the Qt Creator from step 1 while the project from step 2 is open results in a project configuration that does no kit configured.