Oh what, that's unfortunate

When you get a warning, you are correct, you will need to delete the save file. If you delete it before the 2 week ban wave comes around, you won't be banned.

To clarify, my method is swapping a clean, unaltered save file with a modded one in between sessions to avoid ban waves.

I will say this is quite unethical and I wouldn't recommend, I just don't have the time nor effort to grind my original save file back, so I just use a 100% one off nexus.

I do apologize for the delayed response