Was knowledge about their construction and purpose mostly preserved, or was much of it lost to time? Were they considered important cultural heritage, odd curiosities, not remarked upon much at all, etc.?
By the way, the invocation of Cleopatra isn't meant to restrict the question simply to her reign -- I'm asking about later Ancient Egyptians generally.
In the time of Cleopatra were the Pyramids still being worshipped and kept in repair? written by u/mikedash
At the time of Cleopatra, the pyramids and the Sphynx were already truly ancient monuments written by u/toldinstone discusses the time period, albeit with a bit more of a Roman focus.
Edit: fixed attribution for the first link.