[PapaBear3625]

The rightful party can’t be found so there is nobody to pay money to.

Then it's unclaimed property, and the state gets it. Just like bank accounts whose owner cannot be found. The state holds the money until the rightful owner is established.

[longtermmemmory]

there is an owner of the property.

unless you are speaking of the note, then that issue is different than abandoned property. It is a unenforced and unclaimed debt that will eventually be time barred.