On a dedicated server(owned by us) running modded Alpha 19.6 we took over a house and rebuilt it. Since yesterday the sections that loot spawns in have been replaced with the original POI prefab interiors. Not the whole house, just very specific sections.
I did use the "Export prefab" option recently around the entire house to save it if that provides any context, but that hadn't made changes to the house until a server restart.
We have a server backup we're reverting to, so no harm done.
Any idea what caused this and how to prevent it from happening again?