Nope, I keep all my mules stored in seperate .zip files. Every single one got wiped, I tried them all. Only one of my mules (level 1, but registered) was left untouched. Also of note, only the accounts I've logged using the hacked client got wiped apparently. It's strange they'd delete all of my mules, but leave my main accounts intact, not even a ban was issued.
I was hoping to see whether other people experienced the same thing.