DiogenesLamp well knows that neither Lincoln nor any law anywhere, any time ever said: ownership of property changes just because some people get together to declare themselves "seceded".
The US Constitution provides that Congress disposes of Federal properties, but no Confederate ever approached Congress to negotiate anything regarding Federal properties in states which declared secession.
All of which DiogenesLamp well understands, but refuses to acknowledge.
Did the founders approach parliament? Then stop bringing it up.