Another thing that can cause the entries to seemingly disappear would be if you copied the profile directory from another machine. Even if you’re on the same machine and do a backup/reformat your machine, it’s going to create a new key. When you have the data which was encrypted with the old key, it can’t decode it
@TornadoRider did you change password in Windows recently?
We’re looking into other scenarios trying to ID how the OS can generate a new key, which makes these entries. We’re putting all known information in NOTICE: Unexplained Data Loss Issue