Then how come Homer`s Iliad [1300bc] of 12 cities point magnetic north duhhh???
How did ancient Egyptians know how to algin their beds to magnetic north?
Can`t prove a negative but positive evidence must be taken into account.
If you have some ancient sources (I mean ancient, not Bauval or some other freak show) that states that they did, I’d really be interested in seeing it. Until then, uh, no, it didn’t happen that way.