Monster Hunter FU and CWCheats

[LunaMoo]

If you mean the "synchronize save" cheat made by me, just activating it allows saving progress from save state over any in-game save.
When it doesn't work, you either activated [disable] cheat(which as the name suggests disables the cheat;p), didn't activated the cheat at all and just enabled cheats in system settings(which is NOT how cwcheats are activated, that merely starts cheat engine and add's cheat menu where you have to "tick" a cheat on the list to activate it), or for whatever reason deleted your normal in-game save in which case you will have to start a new game just to get any save as that cheat allows synchronizing wrong savedata together, but it has to exist in the first place.

If you didn't messed your savedata and don't have too much of a progress on a savestate, you might as well ignore workarounds and just continue from normal in-game save having a lesson for the future to avoid time travel aka loading savestates made before last normal in-game saves as some games just dosn't like it.