All of these questions, and more, are answered by examining what happens with phone taps. Phone taps, which historically were treated precisely the same, and further, there was only ever one phone company in a region back then.

All legislative change is interpreted by courts. So to answer your questions:

# look to see how the legislation is written for phone taps

# know that this new legislation is changing things, the code is being modified

# now look at judicial decisions, and you will have your answer

Seeing as you have no idea how other warrants work, when they expire, you're really just looking for the worst case scenario, without even attempting to see what would happen, and has happened for 100+ years.

Yes?