Saves loads in PKHex but corrupts on cartridge

[ChristIBelieve]

I would greatly appreciate someone's help with this. I am used to modding my saves for SS and SV so I decided to mod some 4th and 5th gen saves as well. I changed around a couple of values for the Battle Tower, items in my backpack, etc., and did not think much of it. When I loaded up all three saves back into my 3ds, I got the description that the save files had been corrupted. I was confused as I made sure with the original saves I had titled them "main," but nonetheless I could not even load them up back into PKHex in order to re edit them as I received an error message that it was unreadable. Luckily, PKHex made backups of my files. They are bak files, so for my Alpha Sapphire I created an identical copy of the file through another save file I created in PKHex, with all of these values still being before I hacked the original file. Oddly enough it still loaded up as a corrupt save file on my 3DS even though it was a duplicate of the original! I am very confused as to what to do as all of these files are readable on PKHex, however I cannot get them to work again on my hardware. What would be the solution? 

main [Sapphire (AS) - 2024-07-24 03ː33].bak POKEMON W.sav [White (W) - 16ː33ː41].bak POKEMON P.sav [PEARL (DP) - 18ː17ː38].bak

[Kaphotics]

Be sure the file you are importing matches the original file name, eg "main", and that you're not restoring any other files to the system's save archive for the game. You've not indicated which homebrew you're using to dump/restore the saves, so I can't speculate what you're doing wrong.

[ChristIBelieve]

I use Checkpoint in order to put the saves back in. And yes I am making sure that it is titled "main" and does not have the other descriptions that are in the files I posted.

[ChristIBelieve]

I'd greatly appreciate if someone can open up my saves and see if they can work them on their 3DS. I have no idea what to do.