No, it seems to be another issue. In my case it’s the other way around: I don’t change any values in the parent class. I set public variables in a child class in the level and sometimes they get reset by closing and reopening the project without even touching the parent class.
For that it would be best to open a new answerhub post so we can focus on the error you are experiencing. In the new post, please list what is occurring, what engine version you are working in, whether it occurs in a clean, blank project with no additional content, and what steps we can take to reproduce this on our end.
I have the same problem. I have a C++ Pawn and I inherit from it into a blueprint. Variables keep reseting when I close/open editor… sometimes even additional components are gone