Corrupt main File

[Manifestation]

Hey Everyone,

I used jk save manager to create a save file on the SD card and edit in pkhex. When I tried playing the game I received an error. When I tried to move the save file back to Pkhex, this error appears;

"Attempted to load an unsupported file type/size.
File loaded:
D:\JKSV\Saves\Pokemon_Ultra_Sun\doesitmatr\main
File Size:
445440 bytes (0x6CC00)

I believe it may have arose because I tried to edit trainer data. Unfortunately I already injected the corrupted file back into the main game so I can't perform a re-dump. Is there any way for me to fix the file to re-edit in pkhex? I wouldn't want to have to start over

Thanks in advance.

main

[sora10pls]

Try using Checkpoint.

[Manifestation]

Backing up the main file with checkpoint gave me the same error. I think the save data itself is what's corrupted, rather than my injection method.

[theSLAYER]

What method you using to transfer save between computer and 3DS?

[Manifestation]

Direct transfer via sd card then inject via jksm. But I'm now hearing checkpoint is a better method.