Version 5.2 material sample count change

Hello,
I have a question about the default material.
It seems that there is a major change in version 5.2.
Here are now already without the Zuagebe of samplers four places assigned.
This is a problem if you want to megrate a material from version 5.1, which has 16 sample counts occupied.

Does anyone have a solution for this?
Thanks in advance.

material 5.1_
material 5.2_