How does soft reset for multiplayer server work? (Modded items not spawning that should be)

As starter; Storage-O-Matic says it both works in MP, as well as can be added mid save, and was updated a week ago so is not deprecated

The modded items are not spawning on zombies or inside unlooted houses, we haven't really branched out to further towns, so maybe all the loot has rendered/loaded for Muldraugh?

Basically: Would soft resetting reset the loot POOL so the proper items are spawning or just restock the loot that was originally inside the containers? Or should I check for some other debugging issues first.