When you buy property you get a deed for the land, but the details of a property can change after that. The deed also doesn't contain ownership, it just says what is on the land. It's common for land to have multiple owners (1/32 is not unheard of) due to inheritance.
I'm building a house, the land deed just has the land plot as we bought it, until the house is 100% finished (and registered) we will not get an updated deed, although the digital system has newer data (you need to register the construction progress).
Property that isn't registered can remain unregistered but must be registered before it is sold.
Just recently I've seen a 30 y.o. deed on some commercial property. Despite it was valid and predated the digital era, it had almost nothing common with the things on the ground.