Can you just do 

{
"Filenames, without .json": [
"/oxide/data",
"AnotherFile"
]
}

To Reset them all

or do you have to do each one on its own

{
"Filenames, without .json": [
"/oxide/data/kits.json",
"AnotherFile"
]
}

I think i got it, so its just

{
"Filenames, without .json": [
"kits_data",
"NTeleportationTPR",
"NTeleportationTown",
"NTeleportationHome",
"PlayerRanks",
"TownTeleport",
"challenge_data",
"CustomChatCommands"
]
}

I'd assume it would be FileName; not/path/to/FileName, /path/to, or /path/to/FileName.json.

I will add wildcards in next update, so it will be "*" or "plugin-specific folder/*"