playing on 1.21.1 on a modpack

at first when i imported over the old files from the 1.20.4 version of the modpack, the entire configuration disappeared and everything was back to default (Menu Item #1 , #2 etc etc) so i just manually added them back in

was working for a while but when i exited the game and came back everything disappeared again

the json file is in its config folder though so idk why it keeps going poof

Could you please provide your menu.json file?

I'm not able to reproduce myself, so would have to have the same setup as you to hopefully find a solution :)

im having the same issue and im running the same version modpack

I'm a player from China, so my description may not be that accurate. I'm having the same issue with the same 1.21.1 version. I've tried to analyze the cause, it may be that the mod has a bug when reading the "menu.json". Here are my "menu.json" and the log file of my game at the time.

minemenu.zip

The same problem occurred with 1.21.1, but my version is 1.21.4. After restarting the game, all menu configurations are gone. I am also a Chinese player, and my English may not be very good.