Pixelmon Mod

So I downloaded a singleplayer adventure map, but the PokeLoot are immediately consumed if a player gets it. It's FCFS (First Come First Served). I want to change all to PL1D (Permanent Loot 1 Drop) for my friends playing on WLAN. Afaik, I can only do it for newly spawned PokeLoots I've placed on creative mode with left clicking and right clicking. Can I edit the map save to change the settings for all the existing PokeLoot that came with the downloaded map?

If they map didn't already have pokeloot on the map, you can reload the untouched map with the saved config changes and it'll take effect.