I tried that, I activate the cheats on the 3.5 version but if I try to load the save in the 3.5.1 version, cheats are disabled.
yeah thats because once they are broken in save they remain broken.
there is weird bug, when you play you save allot and if you delete current save and save new - that breaks it for duration.
only solution is to find older save where works or start game again, i had to quite few times cause of that. it had same issue with v3.5 and v3.5.1. and you do usually notice when you load save. like picture disappearing from table.
beyond that i did start game in v3.5 store, till i manage to keep working one and continue playing in .1