First off, I'm so freaking sorry for not reading the warning properly, that's entirely my fault.
I have my 000014d1 folder saved from after switching to Pretendo, BUT I have a few files backed up from last year, which are:
addSaveData
allbadge.sarc
boss.sarc
savedata
My memory's foggy but I backed them up with either Checkpoint or another save editor. Is there any way I can use these files to restore my badges, or are there any other steps I can take to restoring? I'll go on a little hunt to see if I have any other backups of even just my whole Nintendo 3DS folder, but otherwise, any help is MUCH appreciated.