Thank you so much for this post!!! You have no idea how much this means to me!!!! <3
Now I'm understanding what is happening and can even help out
I have made a fix on older saves for others that are in the same position.
The filename with the shorter name is where default martincheat is False (you did not cheat on martin) you just need to change the value to True....
The longer named file is where the same value is turned to True so you don't have to go to the hassle
(I will update the linked thread from OP as well)