Alright, I just tried replacing both
One is in atmosphere/contents/01007EF00011E000/cheats/
The other is in switch/contents/edizon/cheats/titles.zip/titles/01007EF00011E000/cheats
The text file in both is identical, with the name 8E9978D50BDD20B4.txt
I closed the game and reopened, then when to Edizon, which tells me "No cheats available for this game." I then opened Breeze and tried the "Load code from atmosphere" and "Load code from file" commands. Both gave me "cheat loading error."
Just to make sure, I rebooted my Switch just in case that might solve the issue, but I received the same error. I did change my system ini file so that codes wouldn't load automatically, but I'd assume that shouldn't be causing an issue. My version of Edizon is one I downloaded from SDSetup about 3 days ago, and checking for updates in-app says the app is up to date. I don't know that it will resolve the issue, but the only other thing I know to do is try removing edizon entirely and reinstalling it...
Edit: Just tried reinstalling edizon through the HB app store, since it didn't recognize it as being installed for some reason. Closed game and reopened and still have the same issue of "No cheats available for this game." I turned sysmodules for Tesla and Noexes off, and the only one left on is sys-clk. Still no luck. Here's the text file I'm using if you can spot anything wrong with it. The code I'm trying to add is at the very bottom of the list.
Edit again: I asked a friend to try the same process and he got them to show up right away. He sent me the file and it worked for me too. I think the only thing that was different is that he edited the cheats file in notepad++ while I edited them in just notepad... Does notepad do some kind of encoding that Edizon doesn't recognize?