>Have you looked at Rick Strahl's wwJsonSerializer? It can convert an object into a json string, and back. https://client-tools.west-wind.com/

I'm sure it can reconstruct an existing object just as it was, but in this case I don't need to do that. I just need the reference to the one that's still instantiated and active in memory, and its lifetime is only a few minutes typically, but never more than the lifetime of the associated in-memory objects the records within the file refer to.