hi @FUNCR
AFIK the Verse Persistent data

You must select

Simulate New Users before Publishing,
Several people have said that the game has reverted to Verse Persistent data used during testing, which was imported during the save.
This actually could be none, but not new user’s data
Quite complex there is a document on this
Using Persistable Data in Verse | Unreal Editor for Fortnite Documentation | Epic Developer Community (epicgames.com)